Table 1.
Distribution of characteristics among cases and controls (N = 478).
| Characteristic | Cases |
Controls |
p-value∗ | ||
|---|---|---|---|---|---|
| Count | (%) | Count | (%) | ||
| Age | |||||
| 40 years or older | 177 | (74.1%) | 104 | (43.5%) | |
| Younger than 40 years | 62 | (25.9%) | 135 | (56.5%) | <0.001 |
| Obesity | |||||
| Yes | 205 | (85.8%) | 172 | (72.0%) | |
| No | 34 | (14.2%) | 67 | (28.0%) | <0.001 |
| Marital status | |||||
| Ever married | 194 | (81.2%) | 199 | (83.3%) | |
| Never married | 45 | (18.8%) | 40 | (16.7%) | 0.632 |
| Family history of UF | |||||
| Yes | 57 | (23.8%) | 37 | (15.5%) | |
| No | 182 | (76.2%) | 202 | (84.5%) | <0.001 |
| Contraceptive pill use | |||||
| Yes | 83 | (34.7%) | 98 | (41.0%) | |
| No | 156 | (65.3%) | 141 | (59.0%) | 0.187 |
| Previous live birth | |||||
| No | 81 | (33.9%) | 62 | (25.9%) | |
| Yes | 158 | (66.1%) | 177 | (74.1%) | 0.072 |
| History of miscarriage | |||||
| Yes | 92 | (38.5%) | 102 | (42.7%) | |
| No | 147 | (61.5%) | 137 | (57.3%) | 0.402 |
| Smoking status | |||||
| Smoker | 7 | (2.9%) | 31 | (13.0%) | |
| Non-smokers | 232 | (97.1%) | 208 | (87.0%) | <0.001 |
| Physical activity | |||||
| Yes | 100 | (41.8%) | 110 | (46.0%) | |
| No | 139 | (58.2%) | 129 | (54.0%) | 0.407 |
| Diabetes | |||||
| Yes | 37 | (15.5%) | 29 | (12.1%) | |
| No | 202 | (84.5%) | 210 | (87.9%) | 0.353 |
| Hypertension | |||||
| Yes | 53 | (22.2%) | 34 | (14.2%) | |
| No | 186 | (77.8%) | 205 | (85.8%) | <0.001 |
∗p-value for the χ2 test comparing characteristics between cases and controls.