Table 1 Baseline demographic, lifestyle, reproductive and medical characteristics among women with pelvic inflammatory disease (PID) and those without PID
Characteristic | Pelvic inflammatory disease (n = 19,804) | Without pelvic inflammatory disease (n = 73,769) |
|---|---|---|
n (%) | n (%) | |
Age (years) | Â | Â |
< 20 | 3319 (16.8) | 14,315 (19.4) |
21–30 | 6865(34.7) | 24,942 (33.8) |
31–40 | 5786 (29.2) | 21,027 (28.5) |
41–50 | 2368 (12.0) | 8325 (11.3) |
> 50 | 1466 (7.4) | 5160 (7.0) |
BMI categories (kg/m2) | Â | Â |
< 18.5 | 779 (3.9) | 2569 (3.5) |
18.5–25 | 8374 (42.3) | 29,109 (39.5) |
25–30 | 3880 (19.6) | 12,808 (17.4) |
> 30 | 2858 (14.4) | 9771 (13.3) |
Missing or implausible | 3913 (19.8) | 19,512 (26.5) |
Townsend deprivation quintile | Â | Â |
1 (least deprived) | 3361 (17.0) | 14,744 (20.0) |
2 | 3179 (16.1) | 12,815 (17.4) |
3 | 3765 (19.0) | 13,807 (18.7) |
4 | 3862 (19.5) | 13,380 (18.1) |
5 (most deprived) | 3178 (16.1) | 9843 (13.3) |
Missing | 2459 (12.4) | 9180 (12.4) |
Smoking status | Â | Â |
Non-smokers | 9212 (46.5) | 39,957 (54.2) |
Ex-smokers | 2826 (14.3) | 8368 (11.3) |
Smokers | 6599 (33.3) | 16,462 (22.3) |
Missing | 1167 (5.9) | 8982 (12.2) |
Current lipid | 318 (1.6) | 1021 (1.4) |
Hypertension | 803 (4.1) | 2522 (3.4) |
Diabetes | 290 (1.5) | 861 (1.2) |
Reproductive history | Â | Â |
Gestational diabetes | 126 (0.6) | 273 (0.4) |
Pre-term delivery | 163 (0.8) | 458 (0.6) |
Miscarriage | 2471 (12.5) | 4738 (6.4) |
Stillbirth | 80 (0.4) | 195 (0.3) |
Pre-eclampsia | 92 (0.5) | 281 (0.4) |
Polycystic ovary syndrome | 643 (3.3) | 1405 (1.9) |
Endometriosis | 638 (3.2) | 672 (0.9) |
Current combined oral contraceptive pills | 2043 (10.3) | 5848 (7.9) |