Table 3.
Result of multiple logistic regression analysis of the possible correlates for body mass index (>25 abnormal, <25 normal)
| Univariate | Multivariate | |||
|---|---|---|---|---|
| Variable | OR (95% CI) | p* | OR (95% CI) | p** |
| Age (year) | 1.033 (1.001–1.066) | 0.046 | - | - |
| Prolactin (ng/mL) | 1.033 (1.001–1.067) | 0.045 | 1.034 (1.000–1.070) | 0.048 |
| FSH (mIU/mL) | 0.974 (0.939–1.010) | 0.158 | - | - |
| LH (mIU/mL) | 0.966 (0.899–1.038) | 0.348 | - | - |
| Total testosterone (ng/dL) | 0.998 (0.997–0.999) | <0.001 | 0.998 (0.997–0.999) | <0.001 |
| Estradiol (pg/mL) | 0.996 (0.986–1.006) | 0.429 | - | - |
| Testosterone/estradiol ratio | 0.992 (0.980–1.003) | 0.142 | - | - |
| Semen volume (mL) | 0.988 (0.869–1.123) | 0.852 | - | - |
| Sperm concentration (×106/mL) | 0.998 (0.991–1.004) | 0.523 | - | - |
| Total sperm count (×106) | 0.999 (0.996–1.002) | 0.443 | - | - |
| Progressive motility (%) | 0.990 (0.978–1.002) | 0.107 | - | - |
| Total progressive motile sperm (×106) | 0.995 (0.987–1.002) | 0.132 | - | - |
FSH: follicle stimulating hormone; LH: luteinizing hormone. p* value for comparison between “normal” and “abnormal” groups: Univariate logistic regression test variable. p** value for comparison between “normal” and “abnormal” groups: Multivariate logistic regression test variable