表 2. Analysis of single factors affecting pregnancy outcome of blastocyst transfer.
影响囊胚移植妊娠结局的单因素分析
| Variable | Live birth group (n=322) | Non-live birth group (n=468) | χ2/t | P |
| Age≤35 yr., case (%) | 228 (70.81) | 257 (54.91) | 4.612 | 0.043 |
BMI/(kg/m2),
±s
|
21.06±1.30 | 21.52±1.56 | 1.671 | 0.094 |
| Female infertility≤5 years, case (%) | 218 (67.70) | 239 (51.07) | 7.921 | 0.012 |
FSH/(U/L),
±s
|
7.12±0.65 | 7.20±0.74 | 1.597 | 0.201 |
Endometrial thickness on transplantation day/mm,
±s
|
9.37±0.71 | 8.40±0.88 | 2.253 | 0.038 |
| Endometrial morphology on the day of transplantation/case (%) | 2.317 | 0.065 | ||
| Grade A | 5 (1.55) | 9 (1.92) | ||
| Grade B | 45 (13.98) | 65 (13.89) | ||
| Grade C | 272 (84.47) | 394 (84.19) | ||
| High-quality blastocyst rate/case (%) | 234 (72.67) | 293 (62.61) | 8.036 | 0.011 |
| Inner cell cluster rating/case (%) | 5.629 | 0.034 | ||
| Grade A | 132 (40.99) | 166 (35.47) | ||
| Grade B | 131 (40.69) | 163 (34.83) | ||
| Grade C | 59 (18.32) | 139 (29.70) | ||
| Trophoblast cell rating/case (%) | 6.389 | 0.027 | ||
| Grade A | 130 (40.37) | 153 (32.70) | ||
| Grade B | 130 (40.37) | 145 (30.98) | ||
| Grade C | 62 (19.26) | 170 (36.32) | ||
| Blastocyst expansion stage/case (%) | 1.596 | 0.085 | ||
| Phase 3 | 11 (3.42) | 18 (3.84) | ||
| Phase 4 | 282 (87.58) | 410 (87.61) | ||
| Phase 5 | 24 (7.45) | 32 (6.84) | ||
| Phase 6 | 5 (1.55) | 8 (1.71) | ||
| Blastocyst transfer day/case (%) | 8.158 | 0.010 | ||
| D5 | 295 (91.6) | 410 (87.61) | ||
| D6 | 27 (8.39) | 58 (12.39) | ||
| Fertility rate/case (%) | 16 (4.97) | 35 (7.48) | 8.676 | 0.005 |