Table 1

Baseline characteristics of the 132 study participants

*WOMAC pain, stiffness, and function subscales; †SF-36 components, standardised to Australian normal values; ‡two x ray results lost by subject after study entry, but before classification.
Age years, mean (range)63.1 (41–86)
Sex, number of women (%)71 (54)
Body mass index (kg/m2), mean (range)28.8 (20.0–43.6)
Pain, mean (range)*82 (13–205)
Stiffness, mean (range)*40 (0–96)
Function, mean (range)*313 (42–711)
Physical function, mean (range)†38 (16–58)
Mental function, mean (range)†52 (16–58)
Kellgren and Lawrence grade, No (%)‡
    I12 (9)
    II58 (45)
    III56 (43)
Tibial plateau area (μm2), mean (range)3450 (2280–5040)