Table 2.
Comparison of demographic and clinical characteristics in patients with and without hip abnormality.
| Total (N = 8192) N (% of column) |
Hip abnormality (N = 1372) N (% of row) |
Normal (N = 6820) N (% of row) |
P value* | |
|---|---|---|---|---|
| Age | ||||
| 2–8 years | 1328 (16) | 94 (7) | 1234 (93) | <0.0001 |
| 9–19 years | 2861 (35) | 444 (16) | 2417 (84) | |
| 20–44 years | 2945 (36) | 537 (18) | 2408 (82) | |
| 45–69 years | 1058 (13) | 297 (28) | 761 (72) | |
| Haemophilia type | ||||
| Haemophilia A | 6419 (78) | 1125 (18) | 5294 (82) | 0.0003 |
| Haemophilia B | 1773 (22) | 247 (14) | 1526 (86) | |
| Haemophilia severity | ||||
| Mild | 1844 (23) | 226 (12) | 1618 (88) | <0.0001 |
| Moderate | 1942 (24) | 312 (16) | 1630 (84) | |
| Severe | 4406 (54) | 834 (19) | 3572 (81) | |
| Positive history of a high-titre inhibitor | ||||
| No | 7630 (93) | 1248 (16) | 6382 (84) | 0.0007 |
| Yes | 562 (7) | 124 (22) | 438 (78) | |
| Baseline BMI† | ||||
| Normal | 5094 (69) | 806 (16) | 4288 (84) | <0.0001 |
| Overweight | 1446 (20) | 292 (20) | 1154 (80) | |
| Obese | 851 (12) | 200 (24) | 651 (76) | |
| Concomitant knee arthropathy† | ||||
| No | 4618 (58) | 519 (11) | 4099 (89) | <0.0001 |
| Yes | 3338 (42) | 836 (25) | 2502 (75) | |
| Concomitant ankle arthropathy† | ||||
| No | 4318 (55) | 485 (11) | 3833 (89) | <0.0001 |
| Yes | 3602 (45) | 865 (24) | 2737 (76) | |
| Prophylaxis | ||||
| No | 2024 (25) | 328 (16) | 1696 (84) | 0.4713 |
| Yes | 6168 (75) | 1044 (17) | 5124 (83) | |
*
P value is calculated by Pearson’s chi-squared test.
†
Relevant data missing for some subjects.