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Notice: Agency Information Collection Activities; Submission for Office
of Management and Budget Review; Comment Request; Experimental Study:
Presentation of Quantitative Effectiveness Information to Consumers in
Direct-to-Consumer Television and Print Advertisements for Prescription
Drugs Federal Register: January 5, 2010 (Volume 75, Number 2)
Page 373-379AGENCY: Food and Drug Administration, HHS.
ACTION: Notice.
SUMMARY: The Food and Drug Administration (FDA) is announcing that a
proposed collection of information has been submitted to the Office of
Management and Budget (OMB) for review and clearance under the
Paperwork Reduction Act of 1995.
DATES: Fax written comments on the collection of information by
February 4, 2010.
ADDRESSES: To ensure that comments on the information collection are
received, OMB recommends that written comments be faxed to the Office
of Information and Regulatory Affairs, OMB, Attn: FDA Desk Officer,
FAX: 202-395-6974, or e-mailed to oira_submission@omb.eop.gov. All
comments should be identified with the OMB control number 0910-New and
title Experimental Study: Presentation of Quantitative Effectiveness
Information to Consumers in Direct-to-Consumer (DTC) Television and
Print Advertisements for Prescription Drugs. Also include the FDA
docket number found in brackets in the heading of this document.
FOR FURTHER INFORMATION CONTACT: Liz Berbakos, Office of Information
Management (HFA-710), Food and Drug Administration, 5600 Fishers Lane,
Rockville, MD 20857, 301-796-3792, Elizabeth.Berbakos@fda.hhs.gov.
SUPPLEMENTARY INFORMATION: In compliance with 44 U.S.C. 3507, FDA has
submitted the following proposed collection of information to OMB for
review and clearance.
Experimental Study: Presentation of Quantitative Effectiveness
Information to Consumers in Direct-to-Consumer (DTC) Television and
Print Advertisements for Prescription Drugs--(OMB Control Number 0910-
New)
I. Background
The Federal Food, Drug, and Cosmetic Act (the act) requires that
manufacturers, packers, and distributors (sponsors) who advertise
prescription human and animal drugs, including biological products for
humans, disclose in advertisements certain information about the
advertised product's uses and risks.\1\ By its nature, the presentation
of this information is likely to evoke active trade-offs by consumers,
i.e., comparisons with the perceived risks of not taking treatment, and
comparisons with the perceived benefits of taking a treatment (Ref. 1).
FDA has an interest in fostering safe and proper use of prescription
drugs, an activity that engages both risks and benefits. Therefore, an
examination of ways to improve consumers' understanding of this
information is central to this regulatory task.
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\1\ For prescription drugs and biologics, the act requires
advertisements to contain ``information in brief summary relating to
side effects, contraindications, and effectiveness'' (section 502(n)
of the act (21 U.S.C. 352(n)).
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Under the act, FDA engages in a variety of communication activities
to ensure that patients and health care providers have the information
they need to make informed decisions about treatment options, including
the use of prescription drugs. FDA regulations (21 CFR 201.57) describe
the content of required product labeling, and FDA reviewers ensure that
labeling contains accurate and complete information about the known
risks and benefits of each drug.
FDA regulations require that prescription drug advertisements that
make (promotional) claims about a product also include risk information
in a ``balanced'' manner (21 CFR 202.1(e)(5)(ii)), both in terms of the
content and presentation of the information. This balance applies to
both the front, display page of an advertisement, as well as including
information ``in brief summary'' about the advertised product's ``side
effects, contraindications, and effectiveness''\2\ usually, but not
always, on a separate page. However, beyond the ``balance'' requirement
there is limited guidance and research to direct or encourage sponsors
to present benefit claims that are informative, specific, and reflect
clinical effectiveness data.
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\2\ See section 502(n) of the act.
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FDA has recently provided guidance to sponsors about ways to
present risk information in prescription drug advertisements (Ref. 2).
This guidance notwithstanding, research addressing specifically how to
present benefit and efficacy information in prescription drug
advertisements is limited. For example, ``benefit claims,'' broadly
defined, appearing in advertisements are often presented in general
language that does not inform patients of the likelihood of efficacy
and are often simply variants of an ``intended use'' statement. One
content analysis of DTC advertising by Woloshin and Schwartz (2001)
(Ref. 3) found that information about product benefits and risks is
often presented in an unbalanced fashion. The researchers classified
the ``promotional techniques'' used in the advertisements. Emotional
appeals were observed in 67 percent of the ads while vague and
qualitative benefit terminology was found in 87 percent of the ads.
Only 9 percent contained data. However, for risk information, half the
advertisements used data to describe side-effects, typically with lists
of side-effects that generally occurred infrequently. Similarly, a
content analysis by Frosch et al. (2007) (Ref. 4) found that only a
small proportion of product-claim ads gave specific information about
the population prevalence of the medical condition being advertised.
The authors criticize DTC for presenting ``best-case scenarios that can
distort and inflate consumers' expectations about what prescription
drugs can accomplish'' (see p. 12 of Frosch et al.) (Ref. 4) without
disclosing how many consumers are likely to experience that benefit.
Some research has proposed that providing quantitative information
about product efficacy enables consumers to make better choices about
potential therapy. One possible format (termed the ``drug facts'' box
by its creators) for this information has recently received attention
(Refs. 5, 6, and 7). In these studies, the drug facts box format
contained information about the product's efficacy and safety in terms
of rate (how many people in the clinical trial experienced a benefit or
side effect compared to placebo). As expected, this study showed that
consumers who were provided efficacy information used it. Participants
receiving efficacy information (without other potentially valuable
information about the drug) were more likely to correctly choose the
product with the higher efficacy than consumers who saw
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the brief summary that did not contain this information.
Although these results are intriguing, additional research is
necessary to uncover important information about how consumers
understand effectiveness information about prescription drug products
from direct-to-consumer advertisements. For example, the research to
date does not address whether simply adding efficacy rate information
and qualitative summations to a consumer-friendly brief summary would
enable consumers to find and report the correct answer, or if the
presentation of information in a chart format itself increases
comprehension.
Further, these data cannot address the best way in which to convey
numerical information; percents were used but another format, such as
frequencies, may be more effective at communicating quantitative
information. Previous research shows that individuals have great
difficulty processing numerical concepts (e.g., Beyth-Marom, 1982;
Bowman, 2002; Cohen, Ferrell, and Johnson, 2002) (Refs. 8, 9, and 10).
A few studies have attempted to determine what different formats makes
these concepts least troublesome (e.g., Fagerlin, Wang, and Ubel, 2005;
Lipkus, 2007) (Refs. 11 and 12), however, most research into the
communication of numerical concepts concentrates on risk information.
We are not aware of research looking into the integration of
quantitative information about effectiveness or benefits into the body
of the advertisement itself. The addition of this information may help
consumers make better health care decisions, provided they can
understand it.
It is also not known if ways of communicating product efficacy work
equally well across print and television DTC media. To our knowledge,
research on presenting quantitative information in risk communication
has been conducted exclusively with static modalities. The ideal format
for presenting quantitative information may vary as a function of
presentation. The amount of mental processing capacity each individual
can devote to understanding a message varies depending on how long
individuals have to look at the material and whether the material is
self-paced or presented at an uncontrollable speed. As a result, some
forms of quantitative information may lend themselves to print, rather
than broadcast. This particular understanding is crucial to the risk-
benefit tradeoff that patients must make with the consultation of a
health care professional in order to achieve the best health outcomes.
The proposed study will examine: (1) Various ways of communicating
quantitative efficacy in DTC print ads and (2) whether the findings
translate to DTC television ads.
In the Federal Register of June 22, 2009 (74 FR 29490), FDA
published a 60-day notice requesting public comment on the proposed
collection of information. FDA received four comments.
II. Comments on the Information Collection
In the following section, we outline the observations and
suggestions raised in the comments and provide our responses.
(Statement 1) All four comments expressed support for the research
to explore issues of quantitative benefit information. They all
described the collection of data as a worthy endeavor which will
provide useful information on how best to communicate information in
DTC ads.
(Statement 2) Two comments suggested enhancing or supplementing the
existing behavioral intention questions (questions 13a through d in the
questionnaire).
(Response) We took this as an opportunity to examine our behavioral
intention questions thoroughly. We decided to maintain three of our
four behavioral intention questions but remove one of them because of
possible redundancy. We also added a new item to this question on the
basis of a comment from one of our peer reviewers. Although we took
seriously the suggestion to inquire about use of the Internet, one of
our existing questions already covers this issue. In the interest of
brevity, we have decided to streamline this section.
(Statement 3) One comment suggested including some questions about
the risk/benefit tradeoff.
(Response) We plan to do so and these questions can be seen in
questions 23a through d of the questionnaire. We labeled this variable
``attitude toward drug'' because it is easier to analyze and interpret
using this term.
(Statement 4) Three comments suggested adding different types of
participants to our sample, including: (1) A general population sample,
(2) a sample of participants suffering from a medical condition that
they can diagnose themselves, and (3) samples of at least three
different medical conditions.
(Response) We selected high cholesterol because it is prevalent in
the population and is commonly advertised DTC. We think adding a
medical condition that is symptomatic or can otherwise be self-
diagnosed is an excellent suggestion. We hope to explore the research
questions in the current study in a variety of other medical conditions
in future research.
(Statement 5) Two comments suggested comparing the test ad with
either the standard of care or with multiple other comparators instead
of simply comparing it to placebo.
(Response) In response, we remind readers that this is the first
study to examine issues of quantitative benefit information in print
and television DTC ads and that existing literature paints a grim
picture of the amount of numerical information viewers may be likely to
absorb. Thus, we are using the simplest comparison for this first
study. We agree that future studies should examine other types of
comparisons; however, we remind readers that only comparisons that are
in the approved product labeling can be displayed in promotional
pieces.
(Statement 6) One comment recommended the use of the Newest Vital
Sign health literacy test.
(Response) We examined this test and considered it for use in our
design, but ultimately decided against it for a number of reasons.
First, we would have to modify the test so that it could be
administered over the Internet rather than in person. It is unclear how
some aspects of the test could be altered in such a way. Second, the
test takes approximately 3 minutes when administered in person and may
take as long or longer to administer via computer. We believe that
numeracy is the key component of health literacy that will influence
the results of our study, and we have devoted considerable space in the
questionnaire to its measurement (see questions 29a through f, 30a
through d, and 31a through d of the questionnaire). Because of time
constraints and the key role of numeracy, we will maintain our current
questions to thoroughly examine numeracy and provide basic information
on health literacy. We will also include a one-item subjective health
literacy item (see question 28 in the questionnaire). We will continue
to examine the Newest Vital Sign measure for future research.
(Statement 7) Two comments expressed concern that our study does
not address the role of the health care provider and overstates the
decisions that consumers can make about their prescription drugs.
(Response) We agree that the health care provider is the best
person to interpret clinical data and that the consumer or patient does
not make the final prescribing decision. Nonetheless,
[[Page 375]]
DTC is currently directed at consumers in such a way that they have
information about the risk side of the risk/benefit tradeoff but no
specific information about the benefit side. This study is designed to
assess whether adding specific benefit information will help consumers
understand how well the product works, which may ultimately result in
better-informed conversations with their health care providers.
(Statement 8) One comment suggested looking at the results of this
study in conjunction with the results of another study we are
conducting concerning the role of distraction in television ads in
order to inform the development of future research.
(Response) This is an excellent suggestion that shows a strong
understanding of the Division of Drug Marketing, Advertising and
Communications' (DDMAC) long-term research goals. We plan to use the
results of these two studies, in part, to strengthen the development of
our future research.
(Statement 9) One comment recommended the inclusion of open-ended
recall questions in the questionnaire.
(Response) We have included some open-ended questions in the
revised questionnaire (see questions 4 and 15 in the questionnaire).
(Statement 10) One comment suggested including questions about
perceptions of safety and efficacy. A related comment suggested using
personal framing rather than asking about ``the average person.''
(Response) We have included questions about safety and efficacy
perceptions and these are shown in the revised questionnaire (see
questions 15, 16, 17, and 20 in the questionnaire). We combed through
the questionnaire to determine the best framing for each question.
Where possible we added personalizing language, but in portions of the
questionnaire that measure recall of the words in the ad, we mimicked
the language of the ad (see questions 14a through h and 18a through i
in the questionnaire).
(Statement 11) One comment suggested copy testing our mock ad
before it is included in the protocol.
(Response) This is an excellent suggestion that cannot be
implemented due to limited resources. Nevertheless, we conducted
extensive pretesting of the stimuli ad for a previous project and
applied the same procedures and concepts to the creation of the current
mock ad. Moreover, we conducted limited cognitive testing (of fewer
than nine people) to address such issues and these interviews provided
some assurance that our ads were acceptable as were the ads for the
other project.
(Statement 12) One comment suggested that we show the ads to
participants as they would view them at home, i.e., in a clutter reel
of ads for the television component and in a group of magazine ads in
the magazine component.
(Response) Although embedding our stimuli within other ads would
more closely mimic real viewing, we have several research questions to
answer before we reach that point. We are not confident participants
will understand any numerical information even when specifically
directing them to one ad because this type of information seems to be
so difficult for people to understand. We need to establish the basic
parameters of statistical and visual information presentation before we
can manipulate the realism of the situation and begin to examine other
issues such as stopping power and attention.
(Statement 13) One comment recommended against using the Internet
to administer the study and instead suggested the use of a mall-
intercept protocol.
(Response) Although we recognize that one study cannot address all
questions and repeat that the current study is planned to be the first
among future studies, we do require several experimental conditions to
answer basic presentation and comprehension questions. The resources
necessary to conduct this study using a mall-intercept procedure give
us less than half of the participants we are currently utilizing. Given
that we are using a nationally representative, random digit dialing-
based Internet panel to collect our experimental data, we feel that we
are obtaining the best value for our funds. We do not feel that the
tradeoffs in terms of external validity regarding mall-intercepts are
favorable to that method.
(Statement 14) One comment recommended including an analysis plan
for review, specifically one that addresses what result(s) would
support a conclusion that the test ad has achieved a balanced
presentation.
(Response) In response to the first part of this comment, we have
included an analysis plan in this current document. In response to the
second part of this comment, the primary research question in this
study is not whether the information is balanced, but simply how well
participants can understand numerical benefit information. Although we
will address questions of balance and risk/benefit tradeoff in our
questionnaire (see questions 23a through d in the questionnaire), our
main dependent variables concern the recall and understanding of the
benefit information, independent of the other information in the ad.
Secondarily, we will examine recall and comprehension of risk
information to assess whether it is affected by the inclusion of
benefit information and the form the benefit information takes.
Finally, we will look at the intersection of benefit and risk
information, primarily in risk and benefit perception questions. Our
main analyses, however, involve the understanding of benefit
information and not in the balance of benefit and risk information.
That is an excellent suggestion for future research.
(Statement 15) One comment expressed concern that high efficacy may
not be the only reason to select one drug over another.
(Response) We agree. The current research is not designed to
examine the multiple factors that a physician or a consumer considers
when prescribing or deciding to take a drug. The scope of this project
is to investigate the presentation of quantitative benefit information.
We have chosen to vary the efficacy of the product (high versus low) as
a simple method for determining whether viewers can understand how well
the product works when this information is presented in different
forms. We maintain that the efficacy of the drug is a major
consideration in this decision and therefore represents a reasonable
variable to use in this study.
(Statement 16) One comment was concerned that data presentation,
and in particular the relative frequency presentation, would confuse
consumers.
(Response) This comment reflects the very reason we are conducting
the study. Before considering the idea of adding quantitative benefit
information to DTC advertising, we want to ensure that we are not
causing people to become more confused about their options. We have
included the relative frequency condition specifically because we
believe consumers do have trouble understanding this format. Sponsors
have expressed interest in using this format in their ads and therefore
this is a particularly important experimental condition for testing.
(Statement 17) One comment suggested that we ask questions about
participant age and education.
(Response) We ask these and other demographic questions in this
study (see questions 39 through 45 in the questionnaire).
(Statement 18) One comment mentioned that subjective measures of
drug efficacy may confuse viewers.
[[Page 376]]
(Response) We will define high and low efficacy quantitatively
based on the range of efficacy currently found in the drug class. We
will ask perception questions on Likert scales (e.g., strongly agree to
strongly disagree) as well as numerical scales.
(Statement 19) One comment suggested that we are basing our entire
study on an outdated study from 2001.
(Response) First, we provided information about the 2001 study to
provide background information because it is relevant to the current
study but have not based our entire research on it. Second, it is
unclear what basic principles of human communication will have changed
in the 8 years that have passed since the publication of this one
study. Finally, although this one study shows that researchers in the
field are investigating similar issues, no research currently exists to
answer our research questions about the understanding of quantitative
information in print and television DTC advertisements.
(Statement 20) One comment suggested that 20 minutes is not
adequate for participants to complete this study.
(Response) We have completed similar studies in the past within 20
minutes. We will conduct cognitive testing before the administration of
the study to ensure that the protocol can be completed within 20
minutes. Interviews lasting longer than 20 minutes have shown that
participants tend not to want to spend that much time on them.
Therefore, we will maintain the study at 20 minutes or less.
III. Revised Study
Based in part on these comments, further research discussions, and
the input of three external reviewers, we propose the following revised
design, hypotheses, and analysis plan.
A. Overview
This study will be conducted in two concurrent parts: One examining
quantitative information in DTC print advertisements and the other
examining such information in DTC television advertisements. Three
factors will be examined: Drug efficacy, statistical format, and visual
format.
We will investigate two levels of drug efficacy (low versus high),
defined by a quantifiable, objective metric that can be conveyed in
graphical representations of the drug versus the comparator reference
drug (in this case, placebo). Specifically, high efficacy will be
defined by a large, noticeable difference compared with no treatment;
whereas low efficacy will be defined by a minimal difference between
the drug and no treatment. We will examine two levels of efficacy to
determine whether participants can accurately distinguish between these
levels within various formats.
We will investigate five statistical formats, defined as the type
of statistical information conveyed: Frequency, percent, frequency plus
percent, relative frequency, and frequency plus relative frequency.
Based on existing literature, we will use the frequency statistical
format in all of our visual formats for consistency.
Visual format is defined as various methods through which efficacy
can be visually represented. We have chosen to investigate four
different formats: Pie chart, bar chart, table, and pictograph.
Additionally, we will have a control condition with no specific
efficacy information provided. Please see the sample stimuli for the
operationalization of each of these conditions. The factors will be
combined in a partially crossed factorial design as follows:
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Statistical Format
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Frequency +
Frequency Percent Frequency + Relative Relative
Percent Frequency Frequency
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Efficacy Low ................. ................. ................. ................. .................
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High ................. ................. ................. ................. .................
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and
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Visual Format
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None Pie Chart Bar Chart Table Pictograph
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Efficacy Low ................. ................. ................. ................. ..............
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High ................. ................. ................. ................. ..............
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+ 1
------------------------------------------------------------------------
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No Statistical Format/No Efficacy .................
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B. Procedure
This study will be administered over the Internet. A total of 2,250
interviews involving print ads will be completed. Participants in this
part of the study will be randomly assigned to view one version of the
magazine promotion page and the brief summary page of a prescription
drug ad. Following their perusal of this document, they will answer
questions about their recall and
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understanding of the benefit and risk information, their perceptions of
the benefits and risks of the drug, and their intent to ask a doctor
about the medication.
A total of 2,250 interviews involving television ads will be
completed. Participants in this part of the study will be randomly
assigned to view one version of a television ad twice and answer the
same questions described in the previous paragraph.
For both parts, demographic and health care utilization information
will be collected. The entire procedure is expected to last
approximately 20 minutes. This will be a one-time (rather than annual)
information collection.
C. Participants
Data will be collected using an Internet protocol. Participants
will all have reported that a health care professional has diagnosed
them with high cholesterol and will represent a range of education
levels. Because the task presumes basic reading abilities, all selected
participants must speak English as their primary language. Participants
must be 18 years or older.
D. Hypotheses
1. Preface
The proposed research has two main objectives. First, we plan to
test several statistical formats to determine whether the presentation
of efficacy information in different formats affects perceptions of
efficacy. The risk communication literature suggests that presenting
numerical risk information as an absolute frequency (e.g., N out of
100) may be the most easily understood format (Fagerlin et al., 2007)
(Ref. 13). Percent, and a combination of absolute frequency and
percent, represent increasingly complex statistical formats; however,
they may not differ from the baseline of absolute frequency for average
consumers. In contrast, the risk communication literature suggests that
presenting numerical risk information as a relative frequency (e.g., 10
times higher) is a markedly more complex statistical format that biases
perceptions (Fagerlin et al., 2007) (Ref. 13). Thus, presenting
efficacy information as a relative frequency, compared to absolute
frequency, may affect perceptions of efficacy. Presenting the
combination of absolute frequency and relative frequency may mitigate
this effect.
Second, we plan to test several visual formats to determine whether
the presentation of a visual format, in conjunction with the
presentation of absolute frequency information, affects perceptions of
efficacy. The risk communication literature suggests that the addition
of visual formats such as bar charts, tables, and pictographs increase
peoples' understanding of numerical information (Ancker et al., 2006;
Lipkus and Hollands, 1999) (Refs. 14 and 15). However, not all visual
formats are always helpful; for instance, pie charts may only help when
people are comparing proportions (Lipkus, 2007) (Ref. 12). Thus,
presenting efficacy information with a bar chart, table, and
pictograph--but not necessarily with a pie chart--may affect people's
understanding of efficacy information, in comparison to when there is
no visual format.
Measuring numeracy will allow us to assess the magnitude of these
effects across participants. Similarly, the separate TV and print
portions of the study will allow us to assess the magnitude of these
effects across these modalities.
2. Specific Hypotheses
a. Efficacy effects in print and TV ads.
(1) Behavioral intentions, attitude toward drug, and perceived
efficacy will be higher in high efficacy conditions than in low
efficacy conditions.
(2) We will explore whether there are differences between the no
efficacy condition (control) and the low and high efficacy condition on
behavioral intentions, attitude toward drug, and perceived efficacy.
(3) Benefit accuracy will be higher in the low and high efficacy
conditions than in the no efficacy condition. There will be no
difference between the low and high efficacy conditions.
(4) The effects tested in hypotheses (1) and (2), explained
previously in section III.D.2 of this document, will be modified by
numeracy, such that high numeracy participants will be more likely to
show these effects than will low numeracy participants.
(5) Risk recall will not differ by efficacy level (no, low, high).
(6) Perceived risk will be lower in the high efficacy condition
compared with the low efficacy condition because, according to the
Affect Heuristic (Slovic and Peters, 2006) (Ref. 16), people perceive
things that are more beneficial as less risky.
b. Statistical format effects in print and TV ads.
(1) We will test competing hypotheses for behavioral intentions,
attitude toward drug, and perceived efficacy.
(1a) Overestimation hypothesis: The first hypothesis rests on the
assumption that in the absence of any quantitative information people
overestimate the effectiveness of drugs. Accordingly, we would predict
that behavioral intentions, attitude toward drug, and perceived
efficacy will be higher for participants in the no statistical format
condition, compared to all other statistical format conditions. Support
for this interpretation will be found if estimates of the benefits are
higher in the no statistical format condition than in all other
statistical format conditions.
(1b) Peripheral cue hypothesis: The competing hypothesis rests on
the assumption that any statistical information will be used as a
peripheral cue; that is, participants will not process the quantitative
information provided in the various statistical formats but will rather
view it as ``scientific proof'' of the drug's efficacy. Accordingly, we
would predict that behavioral intentions, attitude toward drug, and
perceived efficacy will be lower for participants in the no statistical
format condition, compared to all other statistical format conditions.
Support for this interpretation will be found if, in addition to
perceived efficacy effects, estimates on attitude toward the ad
``peripheral cue'' measures--ratings of how believable, persuasive,
informative, etc., the ad is--are lower in the no statistical format
condition than in all other statistical format conditions.
(2) Based on the risk communication literature, we predict that the
absolute frequency, percent, and absolute frequency and percent
conditions may not differ on behavioral intentions, attitude toward
drug, or perceived efficacy. However, we predict that behavioral
intentions, attitude toward drug, and perceived efficacy will be higher
in the relative frequency condition than in the absolute frequency,
percent, absolute frequency + percent, and absolute frequency +
relative frequency conditions.
(3) The effects tested in hypotheses (1) and (2) will be modified
by numeracy. (See sections III.D.1 through 2 of this document.) For
instance, we expect that the difference between the relative frequency
and the absolute frequency + relative frequency conditions will be
greater for high numeracy participants than for low numeracy
participants (because high numeracy participants will be more likely to
use the additional information provided by the absolute frequency).
(4) Benefit accuracy will be lowest in the no statistical format
condition and highest in the absolute frequency condition (Slovic,
Monahan, and MacGregor, 2000) (Ref. 17). Tests of other relations
between statistical formats will be exploratory. For instance, we might
see information overload with some formats (e.g., absolute frequency
and relative
[[Page 378]]
frequency) which impedes benefit accuracy.
(5) The effects tested in hypothesis (4) will be modified by
numeracy, such that low numeracy participants will show greater
differences in benefit accuracy across statistical formats than will
high numeracy participants (Peters, Vastfjall, et al., 2006) (Ref. 18).
(6) We expect that risk recall will not differ by statistical
format, but we will conduct exploratory analyses to determine whether
information overload impedes risk recall.
(7) We expect that perceived risk will be lowest in the relative
frequency condition if perceived benefit is indeed highest in this
condition (see Slovic and Peters, 2006, reference 16 of this document).
c. Visual format effects in print and TV ads.
(1) We will test competing hypotheses for benefit accuracy,
behavioral intentions, attitude toward drug, and perceived efficacy.
(1a) Visual information facilitation hypothesis: The first
hypothesis rests on the assumption that participants will, to the
extent possible, process and use the information in the visual formats.
The risk communication literature suggests that visual representations
of risk can increase understanding, and that people have a more
difficult time processing this kind of information in pie charts, as
compared to other visual formats. Therefore, our first hypothesis is
that benefit accuracy will be higher in the bar chart, table, and
pictograph conditions--but not necessarily the pie chart condition--
than in the no visual format condition. Tests of other relations
between visual formats will be exploratory.
(1b) Information overload hypothesis: Alternatively, there may be
no differences across visual formats on behavioral intentions, attitude
toward drug, perceived efficacy, or benefit accuracy if the visual
serves as a distraction or is too much information to process.
(1c) Peripheral cue hypothesis: Behavioral intentions, attitude
toward drug, and perceived efficacy--but not benefit accuracy--may be
higher in all visual conditions than in the no visual condition if the
visual information serves as a peripheral cue.
(2) The effects tested in hypothesis (1) will be modified by
numeracy. For instance, we expect that high numeracy participants will
be more likely to process the information in the visual formats, and
thus more likely to show the pattern of effects outlined in 1a,
compared to low numeracy participants.
(3) We expect that perceived risk and risk recall will not differ
by visual format but we will conduct exploratory analyses to determine
whether information overload impedes risk recall.
E. Analysis Plan
We will conduct the following statistical analyses separately for
the print and television versions of the ad.
Efficacy effects in print and TV ads: We will conduct Analysis of
Variance (ANOVAs) to test whether the no statistical format/no efficacy
condition differs from the low and high efficacy condition on the
dependent measures (i.e., benefit accuracy, behavioral intentions,
attitude toward drug, perceived efficacy, perceived risk, and risk
recall, peripheral cue measures). We will conduct these analyses both
with and without covariates (e.g., demographic and health
characteristics) included in the model. In addition, we will test
whether any main effects are moderated by other measured variables
(e.g., numeracy, demographic, and health characteristics). If the main
effect of efficacy is significant, we will conduct pairwise-comparisons
to determine which conditions are significantly different from one
another. We will also conduct planned comparisons in line with our
hypotheses (see section III.D of this document). In addition, the main
effect of efficacy (low vs. high) and any interaction it has with
statistical format or visual format will be tested in the ANOVAs
presented in the following two sections.
Statistical format effects in print and TV ads: We will conduct
ANOVAs to test whether the no statistical format/no efficacy condition
differs from the other statistical format conditions on the dependent
measures. In addition, we will examine the main effect of statistical
format in ANOVAs predicting our dependent measures from statistical
format, efficacy level, and their interaction. We will conduct these
analyses both with and without covariates included in the model. In
addition, we will test whether any main effects are moderated by other
measured variables. If the main effect of statistical format is
significant, we will conduct pairwise-comparisons statistical tests to
determine which conditions are significantly different from one
another. We will also conduct planned comparisons in line with our
hypotheses. (See section III.D of this document.)
Visual format effects in print and TV ads: To test our hypotheses
regarding visual format, we will examine the main effect of visual
format in ANOVAs predicting our dependent measures from visual format,
efficacy level, and their interaction. We will conduct these analyses
both with and without covariates included in the model. In addition, we
will test whether any main effects are moderated by other measured
variables. If the main effect of visual format is significant, we will
conduct pairwise-comparisons to determine which conditions are
significantly different from one another. We will also conduct planned
comparisons in line with our hypotheses. (See section III.D of this
document.)
The total annual estimated burden imposed by this collection of
information is 1,755 hours for this one-time collection (table 1 of
this document).
Table 1.--Estimated Annual Reporting Burden\1\
----------------------------------------------------------------------------------------------------------------
No. of Annual Frequency Total Annual Hours per
Activity Respondents per Response Responses Response Total Hours
----------------------------------------------------------------------------------------------------------------
Screener 9,000 1 9,000 2/60 270
----------------------------------------------------------------------------------------------------------------
Questionnaire 4,500 1 4,500 20/60 1,485
----------------------------------------------------------------------------------------------------------------
Total 1,755
----------------------------------------------------------------------------------------------------------------
\1\There are no capital costs or operating and maintenance costs associated with this collection of information.
[[Page 379]]
These estimates are based on FDA's experience with previous
consumer studies.
IV. References
The following references have been placed on display in the
Division of Dockets Management (HFA-305), Food and Drug Administration,
5630 Fishers Lane, rm. 1061, Rockville, MD 20852, and may be seen by
interested persons between 9 a.m. and 4 p.m., Monday through Friday.
1. Schwartz, L., S. Woloshin, W. Black, et al., The Role of
Numeracy in Understanding the Benefit of Screening Mammography,
Annals of Internal Medicine, 127(11), 966-72, 1997.
2. Draft Guidance for Industry: Presenting Risk Information in
Prescription Drug and Medical Device Advertising, available at
http://www.fda.gov/downloads/Drugs/
GuidanceComplianceRegulatoryInformation/Guidances/UCM155480.pdf.
3. Woloshin, S. and L. Schwartz, Direct to Consumer
Advertisements for Prescription Drugs: What Are Americans Being
Told, Lancet, 358, 1141-46, 2001.
4. Frosch, D.L., P.M. Krueger, R.C. Hornik, et al., Creating
Demand for Prescription Drugs: A Content Analysis of Television
Direct-to-Consumer Advertising, Annals of Family Medicine, 5(1), 6-
13, 2007.
5. Schwartz, L.M., S. Woloshin, H.G. Welch, The Drug Facts Box:
Providing Consumers With Simple Tabular Data on Drug Benefit and
Harm, Medical Decision Making, 27, 655-692, 2007.
6. Schwartz, L.M., S. Woloshin, H.G. Welch, Communicating Drug
Benefits and Harms Wth a Drug Facts Box: Two Randomized Trials,
Annals of Internal Medicine, 150, 516-527, 2009.
7. Woloshin, S., L.M. Schwartz, H.G. Welch, The Value of Benefit
Data in Direct-to-Consumer Drug Ads, Health Affairs, Web Exclusive
Supplement, W4-234-245, 2004.
8. Beyth-Marom, R., How Probable is Probable? A Numerical
Translation of Verbal Probability Expressions, Journal of
Forecasting, 1, 257-269, 1982.
9. Bowman, M.L., The Perfidity of Percentiles, Archives of
Clinical Neuropsychology, 17, 295-303, 2002.
10. Cohen, D.J., J.M. Ferrell, N. Johnson, What Very Small
Numbers Mean, Journal of Experimental Psychology: General, 131, 424-
442, 2002.
11. Fagerlin, A., C. Wang, P.A. Ubel, Reducing the Influence of
Anecdotal Reasoning on People's Health Care Decisions: Is a Picture
Worth a Thousand Statistics?, Medical Decision Making, 25, 398-405,
2005.
12. Lipkus, I., Numeric, Verbal, and Visual Formats of Conveying
Health Tasks: Suggested Best Practices and Future Recommendations,
Medical Decision Making, 27, 697-713, 2007.
13. Fagerlin, A., P.A. Ubel, D.M. Smith, et al., Making Numbers
Matter: Present and Future Research in Risk Communication, American
Journal of Health Behavior, 31, Supplement 1: S47-56, 2007.
14. Ancker, J.S., Y. Senathirajah, R. Kukafka, et al., Design
Features of Graphs in Health Risk Communication: A Systematic
Review, Journal of the American Medical Information Association, 13,
608-618, 2006.
15. Lipkus, I., J.G. Hollands, The Visual Communication of Risk,
Journal of the National Cancer Institute Monographs, 25, 149-163,
1999.
16. Slovic, P. and E. Peters, Risk Perception and Affect,
Current Directions in Psychological Science, 15, 322-325, 2006.
17. Slovic, P., J. Monahan, DG MacGregor, Violence Risk
Assessment and Risk Communication: The Effects of Using Actual
Cases, Providing Instruction, and Employing Probability Versus
Frequency Formats, Law and Human Behavior, 24, 271-96, 2000.
18. Peters, E., D. Vastfjall, P. Slovic, et al., Numeracy and
Decision Making, Psychological Science, 17, 407-13, 2006.
Dated: December 23, 2009.
David Horowitz,
Assistant Commissioner for Policy.
[FR Doc. E9-31200 Filed 1-4-10; 8:45 am]
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