Table 1.
Baseline demographics and clinical characteristics of study population.
| Characteristics | Total (N = 384) |
| Age, y, mean ± SD | 33.4 ± 6.2 |
| BMI, kg/m2, mean ± SD | 21.0 ± 2.8 |
| Age when first medical attention sought, y, (n = 327), mean ± SD | 31.4 ± 6.3 |
| Age at first endometriosis surgical diagnosis, y (n = 80), mean ± SD | 29.8 ± 5.3 |
| Location of DIE lesions, n (%) | |
| Intestine | 213 (55.5) |
| Vagina | 37 (9.6) |
| Ureter | 10 (2.6) |
| Bladder | 8 (2.1) |
| Left uterosacral ligament | 42 (10.9) |
| Right uterosacral ligament | 31 (8.1) |
| Bilateral uterosacral ligament | 194 (50.5) |
| Treatment history | |
| Previously surgically diagnosed with endometriosis, n (%) | 80 (20.8) |
| Previous surgery for endometriosis (other than DIE), n (%) | 43 (53.8) |
| Previous surgery for DIE, n (%) | 4 (5.0) |
| Previous medical treatment for endometriosis, n (%) | 63 (16.4) |
| Oral contraceptive pills treatment duration, mo (n = 10), mean ± SD | 15.2 ± 24.4 |
| GnRH-a treatment duration, mo (n = 18), mean ± SD | 3.9 ± 1.9 |
| Progesterone treatment duration, mo (n = 5), mean ± SD | 27.6 ± 25.9 |
| Traditional Chinese medication treatment duration, mo (n = 38) (mean ± SD) | 10.6 ± 15.2 |
| Reproductive history, n (%) | |
| Previous pregnancy history | 249 (64.8) |
| Previous miscarriage history∗ | 84 (33.7) |
| Previous voluntary abortion history∗ | 81 (32.5) |
| Previous therapeutic abortion history∗ | 35 (14.1) |
| Previous ectopic abortions∗ | 8 (3.2) |
BMI = body mass index, DIE = deep infiltrating endometriosis, GnRH-a = gonadotropin-releasing hormone agonist.
∗
The proportions were calculated based on pregnant women.