Table 4 Sensitivity, specificity and odds ratios (OR) of the screening questionnaire for knee or hip osteoarthritis by gender and age
From: Validation of a screening questionnaire for hip and knee osteoarthritis in old people
| Â | Â | Sensitivity,% (95% CI) | Specificity,% (95% CI) | OR (95% CI) |
|---|---|---|---|---|
Hip | Total | 87.37% (85.03, 89.71) | 59.76% (56.11, 63.41) | 10.27 (7.43, 14.19) |
Men: | < 70 | 86.11% (78.12, 94.10) | 67.65% (61.71, 73.59) | 12.96 (6.30, 26.66) |
|  | 70–79 | 83.02% (72.91, 93.13) | 62.86% (54.86, 70.86) | 8.27 (3.74, 18.32) |
|  | ≥ 80 | 75.00% (50.50, 99.50) | 73.33% (50.95, 95.71) | 8.25 (1.45, 46.86) |
Women: | < 70 | 89.68% (84.37, 94.99) | 54.46% (49.60, 59.32) | 10.39 (5.67, 19.06) |
|  | 70–79 | 90.82% (85.10, 96.54) | 57.26% (50.92, 63.60) | 13.29 (6.37, 27.58) |
|  | ≥ 80 | 81.48% (66.83, 96.13) | 64.44% (50.45, 78.43) | 7.98 (2.54, 25.11) |
Knee | Total | 94.54% (93.21, 95.87) | 43.20% (38.00, 48.40) | 13.17 (9.29, 18.65) |
Men: | < 70 | 95.83% (92.25, 99.41) | 42.11% (35.09, 49.13) | 16.73 (6.53, 42.85) |
|  | 70–79 | 95.24% (91.17, 99.31) | 45.45% (35.05, 55.85) | 16.67 (6.18, 44.91) |
|  | ≥ 80 | 93.33% (80.70, 100)* | 16.67% (0, 37.76)* | 2.80 (0.22, 35.29) |
Women: | < 70 | 92.51% (89.35, 95.67) | 45.63% (39.61, 51.65) | 10.36 (6.18, 44.91) |
|  | 70–79 | 96.43% (93.83, 99.03) | 40.44% (32.19, 48.69) | 18.33 (8.01, 41.98) |
|  | ≥ 80 | 93.75% (86.90, 100)* | 45.83% (25.90, 65.76) | 12.69 (3.07, 52.40) |