Table 2.
Clinical pregnancy outcomes after single frozen-thawed embryo transfer with different embryo quality and development stage.
| Number of cycles | Clinical pregnancy | Live birth | |||||
|---|---|---|---|---|---|---|---|
| rate(%) | OR(95%CI) | Adjusted OR(95%CI) | rate(%) | OR(95%CI) | Adjusted OR(95%CI) | ||
| Good quality embryo on day 3 | 3597 | 31.86 | 1 | 1 | 24.80 | 1 | 1 |
| Poor quality embryo on day 3 | 261 | 19.54 | 0.52(0.38,0.71) | 0.53(0.39,0.74) | 14.94 | 0.53(0.38,0.76) | 0.56(0.39,0.80) |
| Good quality embryo on day 5 | 518 | 56.76 | 2.81(2.33,3.38) | 2.58(2.07,3.03) | 48.65 | 2.87(2.38,3.47) | 2.61(2.08,3.16) |
| Poor quality embryo on day 5 | 120 | 55.83 | 2.70(1.87,3.91) | 2.50(1.76,3.79) | 47.50 | 2.74(1.90,3.96) | 2.52(1.77,3.84) |
| Good quality embryo on day 6 | 926 | 44.92 | 1.74(1.50,2.02) | 1.60(1.37,1.87) | 36.93 | 1.78(1.52,2.07) | 1.60(1.37,1.88) |
| Poor quality embryo on day 6 | 655 | 36.03 | 1.20(1.01,1.43) | 1.16(0.97,1.39) | 28.09 | 1.18(0.98,1.43) | 1.13(0.94,1.38) |
Bold values indicate statistical significance.