Figure 3 .

Ratio of male to female surgery rate. *U.S. population-based study age ≥ 47. Patients with an arthritis-related visit to the doctor in the past two years at baseline. Adjusted for age, gender, race, comorbidities, functional limitations, income, wealth, insurance type, employment, and BMI ≥ 25 [21]. ~ Rate over 18 months, from south of England study of patients aged ≥65. Unadjusted for confounders [48]. #Surgical rates in public hospitals, population of England. One year incidence, adjusted for socio-economic and ethnicity mix of ward of residence [28]. ^Respondents reporting an arthritis-related visit at baseline. Adjusting for demographics, health need and economic access (including health insurance, wealth and education) [38].

Mota et al. BMC Health Services Research 2012 12:225   doi:10.1186/1472-6963-12-225
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