Table 2.
Pregnancy outcomes of patients with different β-hCG levels 14 days after blastocyst transfer
| HCG level mIU/ml | 5–50 | 51–100 | 101–200 | 201–299 | P |
|---|---|---|---|---|---|
| Female age (years) | 33.0 ± 4.5 | 32.2 ± 4.2 | 32.2 ± 4.8 | 32.6 ± 5.2 | 0.835 |
| AMH (ng/ml) | 6.18 ± 4.37 | 6.79 ± 4.30 | 6.80 ± 4.78 | 6.60 ± 4.89 | 0.922 |
| BMI (kg/m2) | 21.6 ± 2.9 | 22.5 ± 3.0 | 21.9 ± 3.2 | 22.6 ± 3.8 | 0.269 |
| Days of embryos transfer %(n) | 0.356 | ||||
| 5 | 63.6 (21/33) | 75.9 (41/54) | 58.8 (70/119) | 69.8 (74/106) | |
| 6 | 33.3 (11/33) | 24.1 (13/54) | 38.7 (46/119) | 28.3 (30/106) | |
| both 5&6 | 3.0 (1/33) | 0 (0/54) | 2.5 (3/119) | 1.9 (2/106) | |
| No. of embryos transferred % (n) | 0.609 | ||||
| 1 | 45.5 (15/33) | 44.4 (24/54) | 46.2 (55/119) | 37.7 (40/106) | |
| 2 | 54.5 (18/33) | 55.6 (30/54) | 53.8 (64/119) | 62.3 (66/106) | |
| Serum β-hCG (mIU/ml) | 34 (29,41) | 80 (61,90) | 145 (127,174) | 244 (218,244) | 1.93E-149 |
| Biochemical pregnancy loss %(n) | 75.8 (25/33) | 29.6 (16/54) | 13.4 (16/119) | 13.2 (14/106) | 3.81E-14 |
| Early miscarriage %(n) | 15.2 (5/33) | 53.7 (29/54) | 49.6 (59/119) | 51.9 (55/106) | 0.001 |
| Ectopic pregnancy %(n) | 9.0 (3/33) | 7.4 (4/54) | 11.8 (14/119) | 8.5 (9/106) | 0.827a |
| Late miscarriage %(n) | 0.0 (0/33) | 1.9 (1/54) | 1.7 (2/119) | 1.9 (2/106) | 1.000a |
| Live birth %(n) | 0.0 (0/33) | 7.4 (4/54) | 23.5 (28/119) | 24.5 (26/106) | 0.001 |
a Fisher exact test were used