Table 4 Univariate and multivariate analyses in the osteoarthritis (OA) population for relationship between serum ferritin level and demographical, clinical, and radiographic variables at entry
Variables: All OA (N = 120) | Serum ferritin | P value* | Odds ratio | Adjusted Odds ratio |
|---|---|---|---|---|
(ng/ml), mean ± SD | [95% CI; P value**] | [95% CI; P value***] | ||
Sex: | Â | Â | Â | Â |
  Female (N = 76) | 37.79 ±33.3 | 0.0001 | 4.1 | NA |
  Male (N = 44) | 65.3 ±45.0 |  | [CI: 1.76–9.87; P = 0.0004] |  |
Age (years): | Â | Â | Â | Â |
  ≤74 (N = 105) | 45.8 ±39.8 | 0.047 | 3.48 | NA |
  >74 (N = 15) | 61.9 ±40.8 |  | [CI: 0.99–14.01; P = 0.045] |  |
JSW (mm) baseline: | Â | Â | Â | Â |
  >4 (N = 80) | 34.4 ±30.0 | 0.032 | 3.2 | 2.66 |
  ≤4 (N = 40) | 54.6 ±42.9 |  | [CI: 1.29–8.78; P = 0.006] | [CI: 1.07–6.64; P = 0.035] |
KL severity baseline: | Â | Â | Â | Â |
  KL2 (N = 18) | 46.3 ±40.6 | 0.975 | 1.505 | 1.63 |
  KL3/4 (N = 72) | 48.6 ±39.7 |  | [0.459–5.459; P = 0.5943] | [0.54–5.00; P = 0.3859] |