| Variables | Patients (%) | Control (%) |
| Parity |
|
|
| Nullipara | 14 (37.8) | 14 (37.8) |
| Para 1 | 18 (48.7) | 18 (48.7) |
| Multipara | 5 (13.5) | 5 13.5) |
| Total | 37 | 37 |
| Age (years) |
|
|
| <20 | 1 (2.7) | 1 (2.7) |
| 20 - 29 | 18 (48.7) | 18 (48.7) |
| 30 - 39 | 16 (43.2) | 16 (43.2) |
| 40 and above | 2 (5.4) | 2 (5.4) |
| Total | 37 (100) | 37 (100) |
| Delivery EGA |
|
|
| <36 | 25 (67.6) | 4 (10.8) |
| 37 and above | 12 (32.4) | 33 (89.2) |
| Total | 37 (100) | 37 (100) |
| Social class |
|
|
| 1 | 6 (16.2) | 4 (10.8) |
| 2 | 21 (56.8) | 20 (54.0) |
| 3 | 9 (24.3) | 10 (27.0) |
| 4 | 1 (2.7) | 2 (5.4) |
| 5 | 0 | 1 (2.7) |
| Total | 37 (100) | 37 (100) |
| BMI |
|
|
| <18.5 | 1 (2.7) | 1 (2.7) |
| 18.5 - 24.9 | 15 (40.5) | 18 (48.7) |
| 25.0 - 29.9 | 12 (32.4) | 10 (27.) |
| 30 - 34.9 | 6 (16.2) | 6 (16.2) |
| 35.0 - 39.9 | 3 (8.2) | 2 (5.4) |
| Total | 37 (100) | 37 (100) |