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Table 1 Sample descriptive statistics and variable description

From: Consumer response to media information: the case of grapefruit-medicine interaction

Variable (Dependent variable)   Variable description and codea Sample (N = 3,504) % U.S. Census %
Media expose (Y1) =1 if Respondents have been exposed to grapefruit/grapefruit juice news over the past month 15.8 NA
Gender =1 if Male 45.0 48.5b
Age N Mean = 46.1 (Standard deviation = 15.7), range = 18 to 76 - -
Household income =1 if Under $25,000 28.1 25.7
=2 if $25,000 to $49,999 32.0 24.7
=3 if $50,000 to $74,999 19.4 17.7
=4 if $75,000 or more 20.6 31.9
Education =1 if Less than high school 2.6 12.9
  =2 if High school and some college 63.0 57.2c
  =3 if College and more 34.4 29.9c
Trust =1 if Respondents somewhat agree/agree/strongly agree that they trust health information they hear on TV news or read on internet news 55.5 NA
Influence =1 if Respondents somewhat agree/agree/strongly agree that health information from TV or internet news influences their consumption behavior 49.2 NA
Search =1 if Respondents somewhat agree/agree/strongly agree that if they hear new health information from news sources (like the TV or internet), they usually search for more information 60.4 NA
Yes-warning =1 if The medications come with warnings about grapefruit or grapefruit juice of respondents who take prescribed medication 14.7 NA
No-warning =1 if The medications come with no warnings (or unsure) about grapefruit or grapefruit juice of respondents who take prescribed medication 43.2 NA
Occasionally cons. =1 if less than once a month or once a month 45.7 NA
Frequently cons. =1 if 2-3 times a month, once a week, 2–3 times a week or daily 17.9 NA
    Subsample (N = 552)d %
Consumption changes (Y2) =0 if Respondents consumed less than before 10.9
=1 if Respondents did not change their consumption 72.3
=2 if Respondents consume more than before 16.9
Positive tone =1 if Respondents recalled the news was positive 35.5
Negative tone =1 if Respondents recalled the news was negative 27.4
Positive freq N Frequency of positive news (0 to 8), mean =1.5 -
Negative freq N Frequency of negative news (0 to 8), mean =1.3 -
Old news =1 if Respondents already knew of grapefruit-medicine interaction 40.4
New news =1 if The news of grapefruit-medicine interaction was new for respondents 24.5
  1. aAlternative code for the dummy variables, media expose, gender, trust, influence, search, yes-warning, no-warning, low consumption, high consumption, positive tone, negative tone, old news and new news is ‘0’
  2. bAge 18 years and over
  3. cCompleted four years of high school and more; four years of college or more
  4. dThe described percentages of subsample are only for respondents who were exposed to media coverage (i.e. media expose =1)