Table 3 Subgroup regression analysis between WWI with ferritin (ng/ml)
Characteristic | Model 1 OR(95%CI) | Model 2 OR(95%CI) | Model 3 OR(95%CI) | P for interaction* |
|---|---|---|---|---|
Stratified by gender | Â | Â | Â | 0.41 |
 Male | 16.82 (9.04, 24.60) | 13.05 (3.72, 22.37) | 9.98 (0.06, 19.89) |  |
 Female | 25.08 (20.94, 29.21) | 8.84 (4.32, 13.36) | 6.11 (1.25, 10.97) |  |
Stratified by age (years) | Â | Â | Â | 0.82 |
 20–39 | − 6.14 (− 12.63, 0.35) | 13.27 (7.46, 19.08) | 2.39 (− 3.94, 8.71) |  |
 40–59 | − 3.99 (− 13.59, 5.60) | 16.12 (6.94, 25.30) | 15.54 (5.66, 25.43) |  |
 60–80 | − 3.07 (− 12.28, 6.15) | 9.30 (0.01, 18.59) | 10.69 (0.68, 20.70) |  |
Stratified by race | Â | Â | Â | 0.07 |
 White | 9.76 (2.79, 16.73) | 14.34 (6.65, 22.02) | 13.29 (4.99, 21.58) |  |
 Black | 9.68 (1.49, 17.86) | 11.84 (2.91, 20.78) | 4.50 (− 5.10, 14.10) |  |
 Other race | − 2.04 (− 10.18, 6.09) | − 0.82 (− 9.44, 7.80) | − 0.34 (− 9.36, 8.67) |  |
Stratified by hypertension | Â | Â | Â | 0.16 |
 Yes | − 8.10 (− 17.69, 1.49) | 6.37 (− 4.16, 16.91) | 13.78 (2.78, 24.78) |  |
 No | 3.91 (− 1.04, 8.87) | 9.44 (4.41, 14.47) | 4.97 (− 0.29, 10.23) |  |
Stratified by diabetes | Â | Â | Â | 0.40 |
 Yes | − 7.93 (− 22.62, 6.75) | 15.90 (− 0.34, 32.15) | 16.71 (0.49, 32.93) |  |
 No | 5.49 (0.67, 10.31) | 9.19 (4.05, 14.33) | 6.65 (1.16, 12.14) |  |
 Borderline | 7.01 (− 23.56, 37.57) | 30.67 (− 1.54, 62.88) | − 10.08 (− 44.15, 23.99) |  |