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. Author manuscript; available in PMC: 2011 Nov 1.
Published in final edited form as: Osteoarthritis Cartilage. 2010 Aug 14;18(11):1372–1379. doi: 10.1016/j.joca.2010.08.005

Figure 2.

Figure 2

Lifetime risk of symptomatic* hip OA in the JoCo OA.

* Symptomatic was defined as either “pain, aching, or stiffness in at least one hip joint” or “pain in groin” in the radiographically affected hip.

† Weighted to Johnston County population distribution in the 1990 United States Census.

‡ Stratified lifetime risk estimates may not sum to overall lifetime risk estimate because of missing data for stratification variables (Table 1).

** Education, BMI, and history of hip injury were time dependent (i.e., participants’ measurements at baseline and follow-up were analyzed).

†† BMI at age 18 was calculated from self-reported height and weight. Baseline BMI was calculated from height and weight measurements at baseline clinical examination.

‡‡ History of hip injury in the symptomatic and radiographically affected joint.