GA < 20 weeks (n = 126) | GA ≥ 20 weeks (n = 126) | Overall (252) | P-value | |
---|---|---|---|---|
Age (years) | 0.892 | |||
Median (interquartile range) | 29 (23–33) | 28.5 (23–32.5) | 29 (23–33) | |
Race, n (%) | 0.593 | |||
Thai | 106 (49.3%) | 109 (50.7%) | 215 | |
Other | 20 (54.1%) | 17 (45.9%) | 37 | |
BMI (kg/m2) | 0.656 | |||
Median (interquartile range) | 23.8 (21.4–26.7) | 23.7 (20.8–27.1) | 23.8 (21–26.9) | |
Gravid, n (%) | 0.240 | |||
Nulligravida (G = 1) | 51 (54.8%) | 42 (45.2%) | 93 | |
Multigravida (G ≥ 2) | 75 (47.2%) | 84 (52.8%) | 159 | |
Parity, n (%) | 0.253 | |||
Nulliparous (P = 0) | 60 (54.1%) | 51 (45.9%) | 111 | |
Multiparous (P ≥ 1) | 66 (46.8%) | 75 (53.2%) | 141 | |
History of abdominal surgery, n (%) | 0.357 | |||
Presence | 24 (44.4%) | 30 (55.6%) | 54 | |
Absence | 102 (51.5%) | 96 (48.5%) | 198 | |
Type of previous abdominal scar incision, n (%) | 0.694 | |||
Midline | 5 (50%) | 5 (50%) | 10 | |
Transverse | 16 (41%) | 23 (59%) | 39 | |
Laparoscopic | 1 (100%) | 0 | 1 | |
Other | 2 (50%) | 2 (50%) | 4 | |
Abdominal wall thickness (cm) | 0.889 | |||
Median (interquartile range) | 1.7 (1.3-2.2) | 1.7 (1.3-2.1) | 1.7 (1.3-2.1) | |
Deep vertical pocket (cm) | 0.135 | |||
Mean ± SD | 3.9 ± 0.9 | 4.1 ± 1.0 | 4.0 ± 1.0 | |
Placental location n (%) | 0.130 | |||
Anterior | 72 (54.5%) | 60 (45.5%) | 132 | |
Posterior | 54 (45.0%) | 66 (55.0%) | 120 | |
Myoma uteri n (%) | 0.175 | |||
Presence | 1 (20%) | 4 (80%) | 5 | |
Absence | 125 (50.6%) | 122 (49.4%) | 247 |