Table 4 Stratified analysis based on E2 levels on hCG trigger day, with clinical pregnancy as the outcome
Follicle size(mm) | E2 < 200 pg/ml 200 (n = 305) | E2 ≥ 200 pg/ml (n = 458) | ||
|---|---|---|---|---|
Total | N (%) | Total | N (%) | |
≤ 18.0 | 69 | 5 (7.2) | 119 | 18 (15.1) |
18.1 ~ 19.0 | 59 | 7 (11.9) | 55 | 9 (16.4) |
19.1 ~ 20.0 | 71 | 16 (22.5) | 90 | 22 (24.4) |
20.1 ~ 21.0 | 45 | 10 (22.5) | 63 | 15 (23.8) |
21.1 ~ 22.0 | 27 | 5 (18.5) | 51 | 13 (25.5) |
> 22.0 | 34 | 2 (5.9) | 80 | 13 (16.3) |
χ2 | 11.33 | 5.61 | ||
P | 0.045 | 0.346 | ||