| Table 10. Baseline reproductive characteristics and hormone levels of in vitro fertilization (IVF) cycles according to luteinizing hormone/follicle-stimulating hormone ratio (LH:FSH) (n=483). | |||
| < 1.00 (n=305) |
> 1.00 (n=178) |
p-value | |
|---|---|---|---|
| Age (years) | 35.36±3.29 | 33.84±3.79 | <0.001b |
| Weight (Kg) | 65.49±13.44 | 66.00±14.34 | NSb |
| Height (cm) | 163.16±5.96 | 162.50±6.34 | NSb |
| BMI (Kg/m2) | 24.61±4.94 | 25.03±5.48 | NSb |
| Primary infertility type [n (%)] | 234 (77.0) | 144 (80.9) | NSa |
| Female smoker [n (%)] | 36 (24.2) | 8 (13.3) | 0.030a |
| Male smoker [n (%)] | 57 (38.5) | 26 (43.3) | NSa |
| Couple smoker [n (%)] | 24 (16.2) | 8 (13.3) | NSa |
| PCOS + other infertility factor [n (%)] | 29 (9.5) | 17 (9.6) | NSa |
| Male infertility factor [n (%)] | 195 (63.9) | 124 (69.7) | NSa |
| Duration of infertility (months) | 54.17±33.94 | 45.96±29.93 | 0.008b |
| LH,mIU/mL | 5.83±4.54 | 9.55±4.32 | <0.001b |
| FSH,mIU/mL | 8.34±6.71 | 6.50±1.81 | <0.001b |
| Basal estradiol basal, pg/mL | 46.48±33.51 | 54.67±53.04 | 0.043b |
| Progesterone, ng/mL | 0.99±1.17 | 1.30±0.92 | NSb |
Data expressed as mean±standard deviation. p-value < 0.05 was considered statistically significant. BMI: body mass index; PCOS: polycystic ovary syndrome; LH: luteinizing hormone (at beginning of the menstrual cycle); FSH: follicle-stimulating hormone (at beginning of the menstrual cycle); IU - International units; NS - not statistically different; a - Chi-square test; b - One Way ANOVA.