Table 2.
Univariate analysis of the influence of risk factors on the development of DDH in the assessed population (OR, odds ratio; CI, confidence interval)
| Study group, n (%) | Control group, n (%) | p-value/OR/95% CI | |
|---|---|---|---|
| Family history – Yes | 30 (16) | 54 (7) | |
| Family history – No | 162 (84) | 706 (93) | p < 0.001/OR 2.42/95% CI 1.50 to 3.91 |
| Breech presentation – Yes | 24 (13) | 54 (7) | |
| Breech presentation – No | 168 (87) | 706 (93) | p = 0.015/OR 1.87/95% CI 1.12 to 3.11 |
| Swaddling – Yes | 30 (16) | 47 (6) | |
| Swaddling – No | 162 (84) | 713 (94) | p < 0.001/OR 2.81/95% CI 1.72 to 4.59 |
| Oligohydramnios – Yes | 17 (9) | 56 (7) | |
| Oligohydramnios – No | 175 (91) | 704 (93) | p = 0.489/OR 1.22/95% CI 0.69 to 2.16 |
| Intrauterine packing– Yes | 4 (2) | 74 (10) | |
| Intrauterine packing – No | 188 (98) | 686 (90) | p = 0.001/OR 0.20/95% CI 0.07 to 0.55 |
| Firstborn girl – Yes | 67 (44) | 164 (44) | |
| Firstborn girl – No | 87 (56) | 213 (56) | p = 0.999/OR 1.00/95% CI 0.68 to 1.46 |