Table 3: Z-score data shown as means with 95% confidence interval within brackets in individuals with osteoarthritis (OA). Statistically significant differences are highlighted in bold. The p-value in the column all OA is referred to when we compared all groups with OA irrespectively of affected joint and the p-value in the column lower extremity when we compared the groups with OA only in the lower extremity.

Parameter All Individuals Group Comparisons
Hip OA Knee OA Ankle/Foot OA Hand/Finger OA All p-Value Lower Extremity p-Value
Anthropometry N=62 N=108 N=61 N=39
Height 0.0 (-0.3, 0.3) 0.1 (-0.1, 0.3) -0.1 (-0.4, 0.1) 0.0 (-0.4, 0.4) 0.66 0.43
Weight 0.7 (0.4, 1.0) 1.1 (0.8, 1.3) 0.8 (0.5, 1.1) 0.1 (-0.4, 0.9) <0.001 0.14
Body mass index 0.7 (0.4, 1.1) 1.1 (0.9, 1.3) 0.8 (0.5, 1.0) 0.1 (-0.3, 0.5) <0.001 0.19
DXA measurements N=51 N=84 N=61 N=38
Total body BMD 0.5 (0.2, 0.8) 0.5 (0.4, 0.7) 0.8 (0.5, 1.0) 0.2 (-0.2, 0.6) 0.03 0.32
Spine BMD 0.5 (0.2, 0.7) 0.6 (0.4, 0.8) 0.7 (0.4, 0.9) 0.0 (-0.3, 0.4) 0.006 0.46
Proportion body fat 0.7 (0.4, 0.9) 0.9 (0.7, 1.1) 0.5 (0.2, 0.7) 0.0 (-0.4, 0.3) <0.001 0.04
Proportion lean mass -0.7 (-0.9, -0.4) -0.9 (-1.1, -0.7) -0.5 (-0.7, -0.2) 0.0 (-0.3, 0.4) <0.001 0.04