Table 3. Comparison of ongoing pregnancy outcomes according to cut-off value of β-hCG (> 126.5 ng/mL) at 14 days after oocyte retrieval.
| Variables | β-hCG > 126.5 mIU/mL (n = 77) | β-hCG ≤ 126.5 mIU/mL (n = 71) |
|---|---|---|
| Age (years) | ||
| Wife | 34.3±4.6 | 35.6±5.4 |
| Husband | 38.1±5.1 | 40.1±4.1 |
| Cause of infertility | ||
| Ovulatory | 35.1% (27/77) | 35.2% (25/71) |
| Tubal | 33.8% (26/77) | 28.2% (20/71) |
| Unexplained | 31.2% (24/77) | 36.6% (26/71) |
| No. of previous IVF cycles | 2.5±1.2 | 2.6±1.0 |
| Basal FSH (mIU/mL) | 8.0±3.0 | 8.6±4.8 |
| Basal AMH (ng/mL) | 2.0±1.2 | 1.8±0.6 |
| Protocols | ||
| GnRH agonist | 57.1% (44/77) | 59.2% (42/71) |
| GnRH antagonist | 42.9% (33/77) | 40.8% (29/71) |
| No. of oocytes retrieved | 10.1±5.7 | 9.7±7.4 |
| No. of MII oocytes | 6.7±4.7 | 6.8±5.3 |
| No. of 2PN | 4.9±3.2 | 4.8±3.9 |
| Fertilization rate | 73.2% | 70.6% |
| No. of embryos transferred | 1.8±1.0 | 1.6±0.8 |
| Pregnancy outcomes | ||
| Ongoing pregnancy | 80.5% (62/77)a | 39.4% (28/71)a |
| Miscarriage | 19.5% (15/77)a | 60.6% (43/71)a |
a P< .0001