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Table 2 Severity of symptomatic knee osteoarthritis (SKOA) according to clinical and radiographic measures: pain visual analog scale (VAS) and Western Ontario and McMaster Osteoarthritis Index (WOMAC) scores at baseline; change in Kellgren-Lawrence (KL) grade from baseline to 24 months; joint space width (JSW) at baseline and 24 months; and progression of joint space narrowing (JSN) at 24 months

From: Age-dependent ferritin elevations and HFE C282Y mutation as risk factors for symptomatic knee osteoarthritis in males: a longitudinal cohort study

Variables OA (N = 120) Female (N = 76) Male (N = 44)
VAS Pain, mean ± SD (0-100 mm) 40.21 ± 24.6 42.3 ± 24.5 37.4 ± 29.6
WOMAC, mean ± SD 170.25 ± 105.2 173.6 ± 104.2 164.5 ± 107.6
KL delta from baseline to 24 months, N (%)    
-1 3 (2.5%) 2 (2.6%) 1 (2.3%)
0 88 (73.3%) 56 (73.7%) 32 (72.7%)
1 26 (21.6%) 16 (21.1%) 10 (22.7%)
2 2 (1.7%) 2 (2.6%) 0
3 1 (8.3%) 0 1 (2.3%)
JSW at baseline, mean ± SD (mm) 3.272 ± 1.766 3.603 ± 1.58 2.7 ± 1.93
JSW at 24 months, mean ± SD (mm) 2.989 ± 1.761 3.388 ± 1.513 2. 3 ± 1.956
JSN over 24 months, mean ± SD (mm) 0.283 ± 0.996 0.21 ± 0.88 0.4 ± 1.16
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