Table 2 Pregnancy outcomes according to serum progesterone levels on the day of embryo transfer
| Â | Progesterone quartiles (ng/mL) | P-value 1* | P-value 2* | |||
|---|---|---|---|---|---|---|
Q1 (< 7.9) | Q2 (7.9–9.6) | Q3 (9.7–12.0) | Q4 (≥ 12.1) | |||
Positive hCG test, n/N (%) | 429/905 (47.4) | 450/894 (50.3) | 511/938 (54.5) | 500/922 (54.2) | 0.006 | 0.003 |
Implantation rate, n/N (%) | 507/1583 (32.0) | 526/1572 (33.5) | 567/1679 (33.8) | 545/1637 (33.3) | 0.735 | 0.276 |
Clinical pregnancy rate, n/N (%) | 393/905 (43.4) | 414/894 (46.3) | 451/938 (48.1) | 445/922 (48.3) | 0.136 | 0.030 |
Early miscarriage rate, n/N (%) | 58/393 (14.8) | 55/414 (13.3) | 58/451 (12.9) | 58/445 (13.0) | 0.852 | 0.385 |
Ongoing pregnancy rate, n/N (%) | 333/905 (36.8) | 351/894 (39.3) | 383/938 (40.8) | 381/922 (41.3) | 0.190 | 0.049 |
Live birth rate, n/N (%) | 323/905 (35.7) | 334/894 (37.4) | 367/938 (39.1) | 359/922 (38.9) | 0.392 | 0.132 |