| Variable | Value n = 110 |
|---|---|
| Age, years, mean ± SD (range) | 54.5 ± 12.4 (23‐79) |
| BMI, kg/m2, mean ± SD (range) | 33.6 ± 7.2 (21.2‐58.7) |
| Sex | |
| Female | 75 (68.2) |
| Male | 35 (31.8) |
| Ahlbäck classificationa | |
| 0 | 73 (72.3) |
| 1 | 27 (26.7) |
| 2 | 1 (1.0) |
| Surgery | |
| Yes | 70 (63.6) |
| No | 40 (36.4) |
| Insurance type | |
| Private | 41 (37.3) |
| Medicaid | 32 (29.1) |
| Medicare | 37 (33.6) |
↵a The Ahlbäck classification scale has 6 grades: grade 0 (no radiographic sign of arthritis), grade 1 (joint space narrowing <3 mm), grade 2 (joint space obliteration), grade 3 (minor bone attrition 0–5 mm), grade 4 (moderate bone attrition >5–10 mm), and grade 5 (severe bone attrition >10 mm). The printed x-rays of 9 patients could not be located at the time of classification.
Note: Data are presented as n (%) unless otherwise specified.