Complementary and alternative medicine in a military primary care clinic: a 5-year cohort study.

Previous studies have found that complementary and alternative medication (CAM) use is common. We enrolled 500 adults presenting to a primary care military clinic. Subjects completed surveys before the visit, immediately afterwards, at 2 weeks, 3 months, and 5 years. Over 5 years, 25% used CAM for their presenting symptom. Most (72%) reported that CAM helped their symptom. Independent predictors of CAM use included female sex (odds ratio [OR], 2.0; 95% confidence interval [CI], 1.1-3.7), college educated (OR, 3.4; 95% CI, 1.8-6.3), more severe symptoms (OR, 1.14; 95% CI, 1.01-1.28), and persistence of symptom beyond 3 months (OR, 3.9; 95% CI, 2.0-7.5). We concluded that a quarter of military primary care patients use CAM over 5 years of follow-up and most find it helpful. CAM users tend to be female and better educated. Patients with more severe symptoms or symptoms that persist beyond 3 months are also more likely to turn to CAM.