Table 3 Patient characteristics and outcomes of transferred D5 or D6 blastocysts
D5 blastocyst (n = 70) | D6 blastocyst (n = 592) | P value | |
|---|---|---|---|
Maternal age (years) | 32.21 ± 4.71 | 31.36 ± 4.38 | 0.165 |
Paternal age (years) | 33.81 ± 6.87 | 33.00 ± 5.33 | 0.529 |
Maternal BMI (kg/m2) | 22.65 ± 3.57 | 22.69 ± 3.19 | 0.961 |
Infertility duration (years) | 4.10 ± 3.04 | 4.15 ± 3.00 | 0.843 |
Type of infertility, n (%) | 0.569 | ||
Primary | 38 (54.29) | 341 (57.60) | |
Secondary | 32 (45.71) | 251 (42.40) | |
Endometrial thickness (mm) | 10.53 ± 1.90 | 10.73 ± 1.76 | 0.293 |
Number of blastocysts, n (%) | 0.000 | ||
1 | 15 (21.43) | 96 (16.22) | |
≥ 2 | 55 (78.57) | 496 (83.78) | |
HCG positive, n (%) | 19 (27.14) | 44 (7.43) | 0.000 |
Clinical pregnancy, n (%) | 15 (21.43) | 40 (6.76) | 0.000 |
Ongoing pregnancy, n (%) | 14 (20.00) | 38 (6.42) | 0.000 |
Live birth, n (%) | 14 (20.00) | 38 (6.42) | 0.000 |