Table 1.
Comparison of baseline characteristics among patients in three groups
| MTX group (n = 120) |
Curettage group (n = 106) |
Hysteroscopy group (n = 221) |
P value | ||
|---|---|---|---|---|---|
| Age (years) | 34.0 (30.0, 38.0) | 33.0 (29.0, 36.0) | 33.0 (30.0, 37.0) | 0.472 | |
| Number of caesarean sections | |||||
| 1 | 66(55.0%) | 59 (55.7%) | 123 (55.7%) | 0.999 | |
| 2 | 50(41.7%) | 43 (40.6%) | 91 (41.2%) | ||
| 3 | 4(3.3%) | 4 (3.8%) | 7 (3.2%) | ||
| Years from last caesarean | 5.0 (2.0, 9.0) | 4.0 (2.0, 7.0) | 4.0 (2.1, 7.8) | 0.369 | |
| Vaginal bleeding | Yes | 73 (60.8%) | 54 (50.9%) | 132 (59.7%) | 0.243 |
| No | 47 (39.2%) | 52 (49.1%) | 89 (40.3%) | ||
| Abdominal pain | Yes | 25 (20.8%) | 27 (25.5%) | 52 (23.5%) | 0.706 |
| No | 95 (79.2%) | 79 (74.5%) | 169 (76.5%) | ||
| Gestational age (days) | 49.0 (42.0, 56.0) | 49.0 (42.0, 62.0) | 49.5 (42.3, 59.0) | 0.914 | |
| Gestation sac/mass diameter (cm) | 2.6 (1.8, 3.5) | 2.6 (1.7, 4.1) | 2.3 (1.7, 3.2) | 0.096 | |
| Foetal heartbeat | Present | 34 (28.3%) | 38 (35.8%) | 87 (39.4%) | < 0.001 |
| Absent | 72 (60.0%) | 62 (58.5%) | 132 (59.7%) | ||
| Missing | 14 (11.7%) | 6 (5.7%) | 2 (0.9%) | ||
| Myometrial thickness of uterine scar (mm) | 3.7 (3.0, 4.2) | 3.8 (3.0, 5.0) | 3.8 (3.0, 4.6) | 0.153 | |
| β-hCG before treatment (mIU/ml) |
19,486.0 (3039.6, 51,123.3) |
22,543.0 (12,817.0, 60,586.3) |
24,493.5 (10,371.8, 46,995.0) |
0.184 | |
|
HGB before surgery (g/L) |
125.0 (114.5, 135.0) |
124.0 (119.0, 133.0) |
122.0 (113.0, 130.0) |
0.102 | |
There were no significant differences with respect to baseline characteristics except foetal heartbeat