Variable | Total | Interval between UAE and curettage | P value | |||
---|---|---|---|---|---|---|
Arm 1 | Arm 2 | Arm 3 | Arm 4 | |||
≤24 h | 24-48 h | 48-72 h | > 72 h | |||
N = 314 | N = 60 | N = 103 | N = 89 | N = 62 | ||
Maternal age (years)a | 32.4 ± 3.8 | 33.3 ± 4.3 | 31.8 ± 4.8 | 32.8 ± 4.9 | 31.4 ± 5.3 | 0.074 |
Gravidityb | 4 (1-12) | 5 (2-11) | 4 (1-11) | 4 (2-9) | 4 (1-12) | 0.870 |
Parityb | 1 (1-3) | 1 (1-3) | 1 (1-3) | 1 (1-3) | 1 (1-3) | 0.978 |
Number of prior CSb | 1 (1-3) | 1 (1-3) | 1 (1-3) | 1 (1-3) | 1 (1-2) | 0.981 |
Interval between CS and CSP (years)a | 5.8 ± 3.9 | 6.4 ± 3.9 | 5.4 ± 3.9 | 6.0 ± 4.0 | 5.2 ± 3.8 | 0.209 |
Recurrent CSP (number, %)c | 11 (3.5%) | 5 (8.3%) | 3 (2.9%) | 1 (1.1%) | 2 (3.2%) | 0.125 |
Fetal heart beat (number, %)c | 112 (35.7%) | 26 (43.3%) | 38 (36.9%) | 29 (32.6%) | 19 (30.6) | 0.450 |
β-hCG level (*10^5mIU/mL)a | 5.79 ± 6.93 | 6.40 ± 4.76 | 4.76 ± 4.47 | 6.08 ± 9.33 | 6.52 ± 8.04 | 0.323 |
Gestational age (days)a | 51.3 ± 10.9 | 50.0 ± 8.8 | 51 ± 10.9 | 52.1 ± 12.2 | 52.0 ± 11.2 | 0.645 |
Maximum diameter of CSP mass (cm)a | 3.2 ± 1.6 | 3.2 ± 1.7 | 3.1 ± 1.6 | 3.3 ± 1.6 | 3.0 ± 1.4 | 0.624 |
Median diameter of CSP mass (cm)a | 2.4 ± 1.3 | 2.4 ± 1.2 | 2.5 ± 1.3 | 2.6 ± 1.4 | 2.4 ± 1.3 | 0.797 |
Minimum diameter of CSP mass (cm)a | 1.8 ± 1.2 | 1.7 ± 1.1 | 1.9 ± 1.1 | 2.0 ± 1.3 | 1.9 ± 1.2 | 0.730 |
Myometrial thickness (cm)a | 0.11 ± 0.08 | 0.11 ± 0.09 | 0.11 ± 0.09 | 0.11 ± 0.08 | 0.11 ± 0.08 | 0.978 |
Rich blood supply (number, %)c | 56 (17.8%) | 10 (16.7%) | 24 (23.3%) | 15 (16.9%) | 7 (11.3%) | 0.131 |
Type of CSP | ||||||
Type I (number, %)c | 263 (83.8%) | 54 (90%) | 85 (82.5%) | 70 (78.7%) | 54 (87.1%) | 0.252 |
Type II (number, %)c | 51 (16.2%) | 6 (10%) | 18 (17.5%) | 19 (21.3%) | 8 (12.9%) | |
Clinical outcome | ||||||
Intraoperative blood loss (mL)a | 66.7 ± 160.1 | 44.5 ± 120.1 | 47.6 ± 136.5 | 82.2 ± 199.9 | 99.6 ± 162.6 | 0.039 |
≥ 200 mL (number, %)c | 32 (10.2%) | 3 (5%) | 8 (7.8%) | 9 (10.1%) | 12 (19.4%) | 0.044 |
Complications (number, %)c | 46 (14.6%) | 4 (6.7%) | 12 (11.7%) | 14 (15.7%) | 16 (25.8%) | 0.018 |
Hospital stay (days)a | 5.8 ± 2.5 | 4.3 ± 1.4 | 5.2 ± 1.5 | 5.8 ± 1.6 | 8.4 ± 3.7 | 0.000 |