Table 2 Comparison of laboratory data between the four groups
Characteristics | Quantile 1 (N = 242) | Quantile 2 (N = 241) | Quantile 3 (N = 241) | Quantile 4 (N = 242) | P-value |
|---|---|---|---|---|---|
No. of oocytes retrieved(n) | 14.30 ± 5.31 | 14.89 ± 5.63 | 15.70 ± 6.36 | 16.80 ± 6.91 |  < 0.001 |
No. of 2PN cleavage | 10.00 (7.00 to 15.00) | 12.00 (8.00 to 15.00) | 11.00 (8.00 to 16.00) | 13.00 (9.00 to 17.00) |  < 0.001 |
No. of 2PN(n) | 10.00 (7.00 to 15.00) | 12.00 (8.00 to 15.00) | 12.00 (8.00 to 16.00) | 13.00 (9.00 to 18.00) |  < 0.001 |
cleavage rate(%) | 99.66 (2675/2684) | 99.65 (2837/2847) | 99.62 (2894/2905) | 99.72 (3238/3247) | 0.137 |
No. of cleavage embryos(n) | 11.42 ± 5.72 | 12.18 ± 5.61 | 12.39 ± 6.24 | 13.70 ± 6.82 |  < 0.001 |
No. of available embryos(n) | 7.08 ± 4.22 | 7.94 ± 4.41 | 7.84 ± 4.73 | 7.19 ± 4.19 | 0.064 |
Available embryo rate(%) | 67 (50 to 82) | 70 (55 to 83) | 67 (47 to 85) | 54 (43 to 67) |  < 0.001 |
High-quality embryos(n) | 2.00 (1.00 to 4.00) | 3.00 (1.00 to 5.00) | 2.00 (1.00 to 5.00) | 3.00 (1.00 to 6.00) | 0.329 |
Blastocyst formation rate(%) | 56.03(1291/2304) | 60.11(1495/2487) | 58.78(1475/2868) | 57.04(1636/2868) | 0.019 |
OHSS rate(%) | 3.75(9/242) | 5.8(14/241) | 9.1 (22/241) | 6.6 (16/242) | 0.106 |