Variables | Training set (n = 241) | Validation set (n = 148) | P |
---|---|---|---|
Age, means ± SD (years) | 31.61 ± 4.73 | 31.94 ± 4.92 | 0.509 |
Gestational age, Medians (lower quartile, upper quantile) (days) | 272 (266–277) | 271 (264–278) | 0.610 |
Number of previous deliveries, n (%) | 0.605 | ||
0 | 94 (39.00) | 55 (37.16) | |
1 | 130 (53.94) | 80 (54.05) | |
2 | 17 (7.05) | 13 (8.78) | |
Number of abortions, n (%) | 0.863 | ||
0 | 109 (45.23) | 71 (47.97) | |
1 | 76 (31.53) | 47 (31.76) | |
2 | 38 (15.77) | 20 (13.51) | |
3 or more | 18 (7.47) | 10 (6.76) | |
Number of previous cesarean deliveries, n (%) | 0.931 | ||
0 | 117 (48.55) | 71 (47.97) | |
1 | 110 (45.64) | 67 (45.27) | |
2 | 14 (5.81) | 10 (6.76) |