Table 2 Data summaries for the training, internal validation and internal validation test groups.
Variables | Training dataset (n = 1416) | Internal validation dataset (n = 336) | External validation dataset (n = 268) | P value |
|---|---|---|---|---|
Diameter of uterine fibroids (cm) | 0.53 | |||
< 4 cm | 180 (12.7%) | 37 (11.0%) | 30 (11.2%) | |
≥ 4 cm and < 8 cm | 1038 (73.3%) | 247 (73.5%) | 191 (71.3%) | |
≥ 8 cm | 198 (14.0%) | 52 (15.5%) | 47 (17.5%) | |
Number of fibroids | 0.26 | |||
Single | 680 (48.0%) | 147 (43.8%) | 134 (50%) | |
Multiple (\(\ge\) 2) | 736 (52.0%) | 189 (56.2%) | 134 (50%) | |
Type of fibroids | 0.17 | |||
Sub serous fibroids | 86 (6.1%) | 13 (3.9%) | 10 (3.7%) | |
Intramural fibroids | 1214 (85.7%) | 303 (90.2%) | 237 (88.4%) | |
Submucosal fibroids | 116 (8.2%) | 20 (5.9%) | 21 (7.8%) | |
Location of fibroids | 0.005 | |||
Cervix | 11 (0.8%) | 4 (1.2%) | 5 (1.9%) | |
Ante theca | 377 (26.6%) | 83 (24.7%) | 58 (21.6%) | |
Posterior | 420 (29.7%) | 134 (39.9%) | 101 (37.7%) | |
Fundus | 136 (9.6%) | 27 (8.0%) | 25 (9.3%) | |
The left side | 187 (13.2%) | 31 (9.2%) | 24 (9.0%) | |
The right side | 169 (11.9%) | 37 (11.0%) | 34 (12.7%) | |
Uterine cavity | 116 (8.2%) | 20 (6.0%) | 21 (7.8%) | |
Type of ultrasound | 0.04 | |||
Transvaginal | 1042 (73.6%) | 267 (79.5%) | 209 (78.0%) | |
Abdominal | 374 (26.4%) | 69 (20.5%) | 59 (22.0%) |
