Table 3.
Associations between semen parameters and kisspeptin in seminal plasma.
| Sperm concentration, 106/ml | Total sperm number, 106 | Total motile sperm count, 106 | ||||
|---|---|---|---|---|---|---|
| % change (95% CI) | P | % change (95% CI) | P | % change (95% CI) | P | |
| Kisspeptin in seminal plasma, ug/ml | 4.6 (1.6, 7.6) | 0.003 | 3.3 (0.0, 6.5) | 0.047 | 3.5 (-0.1, 7.2) | 0.059 |
| Total kisspeptin, ug | 2.3 (-0.9, 5.5) | 0.156 | 7.7 (4.4, 11.0) | ≤0.001 | 7.8 (4.0, 11.7) | ≤0.001 |
1Semen parameters were log-transformed before analyses and back-transformed to obtain the % change (with 95% CI given in the brackets) of semen parameters per IQR increase in kisspeptin. Adjusted for age, abstinence time, BMI grade, and smoking.
IQR, interquartile range; CI, confidence interval.