Table 2 Comparison of the maternal demographics and clinical characteristics in TCTA pregnancies
|  | TCTA reduction to single (n = 31) | TCTA reduction to twin (n = 130) | TCTA-expectant management (n = 18) | P value |
|---|---|---|---|---|
Clinical characteristic | ||||
 Maternal age (years) | 32.57 ± 3.77 | 32.20 ± 4.57 | 32.00 ± 3.48 | 0.634 |
 Interval between transplantation and MFPR (days) | 38.86 ± 3.34 | 37.52 ± 5.19 |  | 0.707 |
 BMI (kg/m2) | 21.41 ± 1.89 | 22.31 ± 2.92 | 22.14 ± 3.16 | 0.235 |
 Duration of infertility (years) | 3.94 ± 1.67 | 4.06 ± 2.51 | 5.11 ± 3.09 | 0.073 |
Infertility type | ||||
 Primary, n (%) | (19/31)61.29 | (79/130)60.77 | (9/18)50.00 |  |
 Secondary, n (%) | 12 | 51 | 9 | 0.671 |
FET (N) | ||||
 not-used (%) | (7/31)22.58 | (26/130)20.00 | (6/18)33.33 |  |
 Used (%) | 24 | 104 | 12 | 0.435 |
Insemination methods | ||||
 ICSI, n (%) | (7/31) 22.58 | (35/130) 26.92 | (3/18) 16.67 |  |
 IVF, n (%) | 24 | 95 | 15 | 0.602 |