| PMC full text: | JAMA Intern Med. Author manuscript; available in PMC 2015 Apr 1. Published in final edited form as: JAMA Intern Med. 2013 Sep 23; 173(17): 1573–1581. doi: 10.1001/jamainternmed.2013.8992 | << Prev
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Figure 1
Adjusted * Proportions of Referrals and Selected Drugs Over Time
* This figure shows estimates adjusted for age, sex, race/ethnicity, region, insurance type, symptom duration/context, whether the provider was the PCP, and whether the visit was located in a metropolitan area.