Factors Associated with herb and dietary supplement use by young adults in the United States

Table 3 Independent Effects of Smoking, Alcohol use, Physical Activity, and Medication use on HDS use in Young Adults; Multivariate Logistic Regression

Lifestyle/behavioral variables	Adjusted Odds Ratios [95% confidence interval] **
Smoking Status
Never	1.0
Current	1.41 [1.16–1.72]
Former	1.50 [1.15–1.95]
Alcohol use in last 12 months
None	1.0
Infrequent/light	1.71 [1.38–2.13]
Moderate/heavy	2.02 [1.53–2.65]
Physical Activity
Low	1.0
Moderate	1.88 [1.48–2.38]
High	2.45 [1.98–3.03]
Prescription medications
No	1.0
Yes	1.51 [1.26–1.81]
Over the counter medications
No	1.0
Yes	1.13 [.91–1.40]

*Logistic Model adjusted for age, sex, race, income, education
**Total sample size for analysis 6375, variables unknown drinking status (n= 225) and unknown physical activity (n= 97) were excluded from final analysis due to small sample size. A sensitivity analysis with the variables included showed no difference in outcomes.
***Data sources National health interview survey 2002, weighted percents extrapolated from the to the U.S. census (2000) for the adult civilian, non-institutionalized household population.

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