| No surgical evacuation | Surgical evacuation | P value |
---|---|---|---|
Number | 150 | 495 | – |
Age (year) | 32.1 ± 5.0 | 32.0 ± 4.8 | 0.85 |
BMI (kg/m2) | 22.4 ± 3.2 | 22.6 ± 3.3 | 0.48 |
AFC (n) | 14.4 ± 5.8 | 14.5 ± 5.8 | 0.95 |
Baseline FSH (IU/L) | 7.3 ± 2.0 | 7.4 ± 2.4 | 0.58 |
Baseline LH (IU/L) | 4.6 ± 3.7 | 4.6 ± 3.3 | 0.98 |
E2 on HCG day (pg/mL) | 4510.2 ± 2613.1 | 4776.3 ± 2645.2 | 0.28 |
P on HCG day (ng/mL) | 1.0 ± 1.2 | 1.0 ± 0.8 | 0.69 |
gestational age of miscarriage (week) | 8.5 ± 1.9 | 9.3 ± 2.3 | < 0.001 |
Interval time between two cycles (day) | 300.0 ± 157.9 | 387.3 ± 192.2 | < 0.001 |
Times of cycle cancellation before second cycle (n) | 0.3 ± 0.8 | 0.4 ± 0.7 | 0.86 |
Endometrial thickness in first cycle (mm) | 10.0 ± 1.7 | 10.0 ± 1.9 | 0.86 |
Endometrial thickness in second cycle (mm) | 9.5 ± 1.9 | 9.0 ± 1.6 | 0.01 |
Endometrial thickness change (mm) | 0.4 ± 1.6 | 0.8 ± 1.8 | < 0.001 |
Number of embryos transferred in first cycle (n) | 1.9 ± 0.3 | 1.9 ± 0.3 | 0.67 |
Number of embryos transferred in second cycle (n) | 1.7 ± 0.5 | 1.8 ± 0.4 | 0.50 |
Number of top quality embryos in second cycle (n) | 0.9 ± 0.8 | 1.1 ± 0.8 | 0.03 |
Rate of blastocyst embryo in second cycle (%) | 26.7 (40/150) | 24.6 (122/495) | 0.59 |
Rate of endometrial thickness < 8 mm in second cycle (%) | 18.7 (28/150) | 17.2 (85/495) | 0.67 |
Implantation rate in second cycle (%) | 39.1 (102/261) | 41.3 (360/872) | 0.53 |
Clinical pregnancy rate in second cycle (%) | 55.3 (83/150) | 54.6 (270/495) | 0.87 |
Live birth rate in second cycle (%) | 46.0 (69/150) | 41.8 (207/495) | 0.36 |
Miscarriage rate in second cycle (%) | 13.3 (11/83) | 17.4 (47/270) | 0.37 |