Table 1 Clinical characteristics of patients in the training and external validation set
Cohort[co] (N) | Training set (N = 358) | External validation set (N = 64) | |||||
|---|---|---|---|---|---|---|---|
Variables | levels | 0 (N = 149) | 1 (N = 209) | p | 0 (N = 28) | 1 (N = 36) | p |
Age (years), Median (IQR) | 32.00(29.00 to 35.00) | 31.00 (29.00 to 34.00) | 0.089 | 32.00 (30.00 to 35.00) | 30.00 (28.50 to 33.00) | 0.052 | |
BMI, Median (IQR) | 23.40(22.20 to 25.10) | 23.30 (22.30 to 24.70) | 0.617 | 22.10 (20.40 to 25.50) | 22.80 (20.40 to 25.30) | 0.968 | |
Cause of infertility | Tubal | 58 (38.9%) | 71 (34%) | 0.512 | 10 (35.7%) | 15 (41.7%) | 0.321 |
Ovulatory | 33 (22.1%) | 40 (19.1%) | 9 (32.1%) | 6 (16.7%) | |||
Male | 44 (29.5%) | 76 (36.4%) | 7 (25%) | 8 (22.2%) | |||
Unexplained | 14 (9.4%) | 22 (10.5%) | 2 (7.1%) | 7 (19.4%) | |||
EMT (mm), median (IQR) | 10.40 (9.60 to 11.70) | 10.90 (9.80 to 12.00) | 0.038 | 10.10 (9.05 to 11.35) | 10.95 (9.85 to 11.70) | 0.066 | |
Endometrial pattern (%) | C | 110 (73.8%) | 145 (69.4%) | 0.425 | 21 (75%) | 28 (77.8%) | 1.000 |
B | 39 (26.2%) | 64 (30.6%) | 7 (25%) | 8 (22.2%) | |||
the type of Colour Doppler (%) | 1 | 36 (24.2%) | 45 (21.5%) | 0.597 | 8 (28.6%) | 10 (27.8%) | 1.000 |
2 | 113 (75.8%) | 163 (78%) | 20 (71.4%) | 26 (72.2%) | |||
3 | 0 (0%) | 1 (0.5%) | 0 (0%) | 0 (0%) | |||