Fig. 3

Forest plot of sensitivity of OA diagnosis algorithms. Table 2 provides description of each algorithm. Error bars show 95 % confidence intervals (CI). Error bars are missing for Rahman 2008 as they did not report CI. Lix 2006 R1: 1 hospitalization OR 2 physician visits OR 1 physician visit and 2 Rx ICD-9CM diagnostic codes in 5 years Lix 2006 R2: 1 hospitalization OR 2 physician visits ICD-9-CM diagnostic codes in 5 years Lix 2006 R3: 2 physician visits ICD-9-CM diagnostic codes in 5 years Rahman 2008 R1: 2 physician visits in 2 years OR 1 hospitalization ICD-9-CM diagnostic code compared with self report Rahman 2008 R2: 2 physician visits in 2 years OR 1 hospitalization ICD-9-CM diagnostic code compared with ACR criteria Lix 2006 L1: 1 physician visit ICD-9-CM diagnostic code in 5 years Rahman 2008 L1: 1 physician visit or 1 hospitalization ICD-9-CM diagnostic code compared with self report Rahman 2008 L2: 1 physician visit or 1 hospitalization ICD-9-CM diagnostic code compared with ACR criteria