Evidence-Based Complementary and Alternative Medicine / 2014 / Article / Tab 2

Research Article

Trend and Pattern of Herb and Supplement Use in the United States: Results from the 2002, 2007, and 2012 National Health Interview Surveys

Table 2

Changes of patient characteristics of herb and supplement users.

Patient characteristics associated with herb and supplement use 200220072012Percentage changePercentage change
Est. %aEst. %aEst. %a(2002 and 2012)(2007 and 2012)

Took herbal preparations and dietary supplements, past 12 months 38,182,84318.9%38,797,21517.9%40,579,30917.9%−1.0%0.0%

Age
 18–64 33,929,60520.0%31,982,18717.6%33,260,54117.8%−2.2%***0.2%
 65+ 4,253,23813.2%6,815,02819.5%7,318,76818.2%5.0%***−1.4%
Gender
 Male 16,153,31316.7%16,905,03816.2%17,972,39316.4%−0.3%0.3%
 Female 22,029,53021.0%21,892,17719.5%22,606,91619.2%−1.8%**−0.3%
Race
 White 31,584,16319.2%33,923,38619.1%35,054,97719.0%−0.2%−0.1%
 Nonwhite 6,598,68017.7%4,873,82912.4%5,524,33212.9%−4.8%***0.5%
Ethnicity
 Non-Hispanic 34,319,98919.1%35,970,01719.2%36,717,73019.0%−0.1%−0.1%
 Hispanic 3,862,85417.4%2,827,1989.7%3,861,57911.3%−6.0%***1.6%
Education
 <12 years 3,501,65610.6%3,681,4239.3%3,523,9149.2%−1.4%−0.2%
 12 years 8,084,69815.3%8,031,00414.3%6,946,42513.2%−2.0%**−1.1%
 >12 years 26,596,48923.0%27,084,78822.3%30,022,07422.2%−0.8%−0.1%
Annual family income
 Less than $35,000 9,918,92017.2%9,616,15414.2%9,631,58413.4%−3.7%***−0.8%
 $35,000 or more 21,055,25721.9%26,073,78720.5%29,156,01320.5%−1.4%*0.0%
Self-assessed health status
 Excellent-good 34,065,19819.3%33,854,21418.0%36,342,22718.4%−0.9%0.4%
 Fair-poor 4,073,93116.7%4,931,34617.2%4,229,28514.5%−2.1%*−2.7%*
Health insurance coverage
 Yes 32,422,70919.1%33,401,78618.6%35,221,06818.7%−0.4%0.1%
 No 5,633,75118.2%5,279,89616.4%5,263,26113.8%−4.4%***−2.6%
Could not fill prescription drug in past 12 months due to cost
 Yes 3,912,80726.9%4,359,26123.1%3,931,62220.9%−6.0%***−2.2%
 No 34,231,67318.3%34,437,95417.4%36,643,77617.6%−0.7%0.2%

Data source: National Center for Health Statistics, 2002 and 2007 NHIS Adult Complementary and Alternative Medicine File [20, 21].
Note: proportions based on weighted prevalence estimates, values for Wald chi-square tests.
aRow percentage.
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