Table 2 Characteristics of patient and blastocyst morphology divided by clinical pregnancy
Variable | Clinical pregnancy (n = 434) | Non-clinical pregnancy (n = 720) | P-value |
|---|---|---|---|
Female age(y) | 30.68 ± 5.25 | 31.39 ± 5.70 | 0.034 |
Duration of infertility(y) | 5.77 ± 2.94 | 5.63 ± 3.24 | 0.731 |
Type of infertility | |||
Primary infertility | 215(49.5%) | 303(42.1%) | |
Secondary infertility | 219(50.5%) | 417(57.9%) | 0.140 |
No. of early cycles | 2.66 ± 1.04 | 2.64 ± 1.07 | 0.794 |
Protocol of FET | |||
NC-FET | 154(35.5%) | 240(33.3%) | |
HRT-FET | 220(50.7%) | 407(56.5%) | |
OI-FET | 20(4.6%) | 31(4.3%) | |
GnRH-a + HRT-FET | 40(9.2%) | 42(5.8%) | 0.090 |
No. of blastocyst transferred | 1.34 ± 0.48 | 1.39 ± 0.49 | 0.121 |
Endometrial thickness (mm) | 9.65 ± 1.63 | 9.28 ± 1.64 | 0.000 |
Endometrial pattern | |||
A | 123(28.3%) | 187(26.0%) | |
B | 280(64.5%) | 479(66.5%) | |
C | 31(7.1%) | 54(7.5%) | 0.677 |
Blastocoele expansion | 3.69 ± 0.68 | 3.53 ± 0.78 | 0.000 |
1 | 5(0.9%)a,b,c,d | 16(1.6%) a,b,c,d | |
2 | 21(3.6%)c,d | 66(6.6%) c,d | |
3 | 156(26.8%)b,d | 345(34.5%) b,d | |
4 | 373(64.0%)a | 534(53.4%) a | |
5 | 24(4.1%)a,b,c,d | 28(2.8%) a,b,c,d | |
6 | 4(0.7%)a,b,c,d | 11(1.1%) a,b,c,d | |
ICM grade | |||
A | 83(14.2%) | 127(12.7%) | |
B | 445(76.3%) | 785(78.5%) | |
C | 55(9.4%) | 88(8.8%) | 0.594 |
TE grade | |||
A | 96(16.5%) | 148(14.8%) | |
B | 416(71.4%) | 694(69.4%) | |
C | 71(12.2%) | 158(15.8%) | 0.122 |