Table 1.
Baseline characteristics of different COS protocols in fresh ET cycles.
| Ultra-long protocol | Long protocol | Antagonist protocol | Short protocol | P value | |
|---|---|---|---|---|---|
| No. of cycles | 108 | 56 | 34 | 59 | |
| Age, years | 34.00 (31.00,37.00)a | 32.50 (30.00,36.00)b | 33.50 (32.00,41.00) | 37.00 (33.00,40.00)ab | 0.001 |
| BMI, kg/m2 | 24.40 (22.09,26.84) | 23.37 (21.37,26.63) | 25.70 (23.02,27.03) | 23.95 (21.76,26.26) | 0.249 |
| Duration of infertility, years | 3.00 (2.00,5.00) | 3.00 (2.00,5.00) | 3.50 (2.50,5.50)d | 2.00 (1.00,3.75)d | 0.007 |
| Primary infertility, n(%) | 40 (37.04)a | 23 (41.07)b | 9 (26.47) | 6 (10.17)ab | <0.001 |
| AFC | 11.00 (7.00,14.00)ac | 13.00 (10.00,16.00)bce | 10.00 (6.00,14.00)e | 9.00 (5.00,11.00)ab | <0.001 |
| Basal FSH, IU/L | 6.45 (5.30,7.78)a | 6.50 (5.88,7.23) | 6.76 (5.60,8.97) | 7.60 (6.32,8.87)a | 0.015 |
| AMH, ng/ml | 1.65 (1.06,3.03)ac | 2.75 (1.66,3.90)bc | 1.32 (0.92,3.37) | 1.30 (0.77,1.90)ab | <0.001 |
| Mean initial diameter of uterus, cm | 6.22 (5.64,7.30)ac | 5.43 (4.65,6.35)c | 6.05 (4.81,6.85) | 5.45 (4.72,6.03)a | <0.001 |
| History of dysmenorrhea | <0.001 | ||||
| None, n(%) | 11 (10.19) | 19 (33.93) | 16 (47.06) | 22 (37.29) | |
| Mild, n(%) | 30 (27.78) | 19 (33.93) | 8 (23.53) | 18 (30.51) | |
| Moderate, n(%) | 26 (24.07) | 8 (14.29) | 6 (17.65) | 11 (18.64) | |
| Severe, n(%) | 41 (37.96)af | 10 (17.86) | 4 (11.76)f | 8 (13.56)a |
Data were presented as median (25th-75th percentile) for non-normality distribution variables and frequencies (percentages) for categorical variables.
COS, controlled ovarian stimulation; BMI, body mass index; AFC, antral follicle count; FSH, follicle stimulating hormone; AMH, anti-müllerian hormone; ET, embryo transfer.
aultra-long vs short; blong vs short; cultra-long vs long; dantagonist vs short; elong vs antagonist; fultra-long vs antagonist.