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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)