Table 2 The analysis of the difference to the variables of ectopic pregnancy
From: The body mass index and the risk of ectopic pregnancy: a 5-year retrospective case-control study
Variables | Total (n = 2119) | Group | P | |
|---|---|---|---|---|
Controla(n = 1460) | Caseb(n = 659) | |||
Age |  |  |  | < 0.001 |
≤ 35 | 1868(88.2%) | 1378(94.4%) | 490(74.4%) |  |
> 35 | 251(11.8%) | 82(5.6%) | 169(25.6%) |  |
Parity | Â | Â | Â | 0.003 |
0 | 1530(72.2%) | 1083(74.2%) | 447(67.8%) | Â |
≥ 1 | 589(27.8%) | 377(25.8%) | 212(32.2%) |  |
History of induced abortion |  |  |  | < 0.001 |
NO | 1409(66.5%) | 1107(75.8%) | 302(45.8%) | Â |
YES | 710(33.5%) | 353(24.2%) | 357(54.2%) | Â |
History of spontaneous abortion | Â | Â | Â | 0.175 |
NO | 1999(94.3%) | 1384(94.8%) | 615(93.3%) | Â |
YES | 120(5.7%) | 76(5.2%) | 44(6.7%) | Â |
History of ectopic pregnancy |  |  |  | < 0.001 |
NO | 2031(95.8%) | 1432(98.1%) | 599(90.9%) | Â |
YES | 88(4.2%) | 28(1.9%) | 60(9.1%) | Â |
History of appendectomy surgery | Â | Â | Â | 0.569 |
NO | 2068(97.6%) | 1423(97.5%) | 645(97.9%) | Â |
YES | 51(2.4%) | 37(2.5%) | 14(2.1%) | Â |
BMI | Â | Â | Â | 0.004 |
< 18.5 | 229(10.8%) | 140(9.6%) | 89(13.5%) |  |
18.5 ~ 24.9 | 1700(80.2%) | 1202(82.3%) | 498(75.6%) |  |
25 ~ 29.9 | 154(7.3%) | 95(6.5%) | 59(9.0%) |  |
≥ 30 | 36(1.7%) | 23(1.6%) | 13(2.0%) |  |