Characteristics | LH concentration after trigger | P value | ||
---|---|---|---|---|
LH <  = 44.34 IU/L (n = 56) | 44.34 IU/L < LH <  = 64.74 IU/L (n = 56) | LH > 64.74 IU/L (n = 55) | ||
Female age (years) | 29.79 (2.97) | 28.85 (3.36) | 29.45 (3.21) | 0.290 |
Female BMI (kg/m2) | 23.14 (3.34) | 22.75 (2.91) | 20.40 (2.22) |  < 0.001 |
Basal hormone concentrations | ||||
 FSH (IU/L) | 6.76 (1.75) | 7.45 (1.76) | 7.44 (1.88) | 0.072 |
 LH (IU/L) | 5.42 (3.12) | 5.44 (2.53) | 7.01 (4.66) | 0.028 |
 AMH (ng/ml) | 7.68 (3.84) | 8.01 (3.74) | 8.17 (4.08) | 0.798 |
 AFC (n) | 29.11 (10.70) | 30.32 (12.34) | 29.38 (7.91) | 0.814 |
 Days of gonadotrophin (d) | 10.41 (1.82) | 10.11 (1.41) | 9.49 (1.25) | 0.006 |
 Total dose of gonadotrophin (IU) | 1794.42 (608.95) | 1578.35 (474.48) | 1222.50 (272.03) |  < 0.001 |
 Days of antagonist (d) | 5.38 (1.60) | 5.16 (1.22) | 5.07 (0.94) | 0.444 |
Hormone concentrations on the trigger day | ||||
 LH (IU/L) | 2.89 (2.29) | 3.27 (2.09) | 3.22 (2.29) | 0.624 |
 E2 (pg/ml) | 5604.81 (2687.45) | 6049.21 (2546.02) | 5941.08 (2362.00) | 0.628 |
 P (ng/ml) | 1.32 (0.58) | 1.51 (0.79) | 1.24 (0.47) | 0.073 |
 No. of follicles (> = 12 mm) (n) | 24.64 (9.05) | 25.20 (8.18) | 24.75 (8.67) | 0.937 |
 No. of oocytes retrieved (n) | 19.59 (9.67) | 23.88 (9.13) | 26.62 (11.90) | 0.002 |
 Mature oocyte rate (× 100%) | 0.86 (0.15) | 0.82 (0.14) | 0.82 (0.13) | 0.222 |
 Follicle output rate (× 100%) | 0.94 (0.47) | 0.94 (0.40) | 0.87 (0.28) | 0.580 |
 Oocyte retrieval rate (× 100%) | 0.80 (0.29) | 0.95 (0.21) | 1.07 (0.19) |  < 0.001 |
 Mature oocyte retrieval rate (× 100%) | 0.68 (0.27) | 0.77 (0.21) | 0.87 (0.21) |  < 0.001 |
 Fertilization rate (× 100%) | 0.69 (0.23) | 0.77 (0.15) | 0.70 (0.18) | 0.071 |
 No. of high-quality embryos (n) | 5.39 (3.62) | 7.11 (4.56) | 7.38 (5.52) | 0.051 |
  No. of available embryos (n) | 10.32 (5.86) | 13.68 (6.84) | 14.13 (7.18) | 0.005 |
 Clinical pregnancy of fresh transfer (n) | 1/1 | 0/0 | 1/1 | –- |
LHCGR rs2293275 genotype | ||||
 GG | 40 | 48 | 52 | 0.003a |
 AG | 16 | 8 | 3 |  |
 AA | 0 | 0 | 0 |  |