| Background | 15 to 39 years old | 40 years and over | P | ||
| Number | Frequency | Number | Frequency | ||
| Gyneco-obstetric history | |||||
| Induced abortion | 998 | 1.19 | 08 | 1.25 | 0.896 |
| Spontaneous abortion | 3198 | 3.82 | 53 | 8.28 | p < 10−3 |
| Cystectomy | 467 | 0.56 | 56 | 8.75 | p < 10−3 |
| Myomectomy | 1476 | 1.76 | 88 | 13.75 | p < 10−3 |
| Placenta previa | 1453 | 1.74 | 95 | 14.84 | p < 10−3 |
| HRP | 1203 | 1.74 | 65 | 10.16 | p < 10−3 |
| GEU | 641 | 0.77 | 23 | 3.59 | p < 10−3 |
| Pathological pregnancy | 5341 | 6.39 | 171 | 26.72 | p < 10−3 |
| Pelviperitonitis | 55 | 0.06 | 03 | 0.47 | p < 10−3 |
| None | 68,762 | 82.26 | 78 | 12.19 | p < 10−3 |
| Total | 83,594 | 100 | 640 | 100 |
|
| Medical history | |||||
| Asthma | 216 | 0.26 | 22 | 3.44 | p < 10−3 |
| Sickle cell disease | 345 | 0.41 | 37 | 5.78 | p < 10−3 |
| Diabetes | 432 | 0.52 | 137 | 21.41 | p < 10−3 |
| HT | 1342 | 1.60 | 337 | 52.65 | p < 10−3 |
| None | 81,259 | 97.21 | 107 | 16.72 | p < 10−3 |
| Total | 83,594 | 100 | 640 | 100 |
|