Table 1 Basic clinical characteristics and pregnancy outcomes of subsequent embryo transfer cycle following miscarriage in an initial IVF cycle
Variables | N (mean ± SD) |
|---|---|
Number | 645 |
Age (year) | 32.0 ± 4.8 |
BMI (kg/m2) | 22.6 ± 3.3 |
AFC (n) | 14.5 ± 5.8 |
Baseline FSH (IU/L) | 7.4 ± 2.3 |
Baseline LH (IU/L) | 4.6 ± 3.4 |
E2 on hCG day (pg/mL) | 4714.2 ± 2638.1 |
P on hCG day (ng/mL) | 1.0 ± 0.9 |
Gestational age of miscarriage (week) | 9.1 ± 2.2 |
Types of miscarriage in first cycle | |
 Embryonic or fetal death | 521 |
 Spontaneous miscarriage | 74 |
 Anembryonic gestation | 51 |
 Interval time between two cycles (day) | 367.3 ± 187.9 |
 Oocytes retrieved in first cycle (n) | 5.8 ± 6.1 |
 Number of embryos transferred in first cycle (n) | 1.9 ± 0.3 |
 Number of embryos transferred in second cycle (n) | 1.8 ± 0.4 |
 Treatment methods in first cycle (n) | |
 IVF/ICSI | 346 |
 FET | 299 |
Treatment methods in second cycle (n) | |
 IVF/ICSI | 60 |
 FET | 585 |
 Endometrial thickness in first cycle (mm) | 10.0 ± 1.9 |
 Endometrial thickness in second cycle (mm) | 9.3 ± 1.5 |
 Endometrial thickness change (mm) | 0.7 ± 1.8 |
 Take surgical evacuation after miscarriage (n) | 495 |
 Non surgical evacuation after miscarriage (n) | 150 |
 Implantation rate in second cycle (%) | 40.8 (462/1133) |
 Clinical pregnancy rate in second cycle (%) | 54.7 (353/645) |
 Live birth rate in second cycle (%) | 42.8 (276/645) |
 Miscarriage rate in second cycle (%) | 16.4 (58/353) |