Kisspeptin Protein in Seminal Plasma Is Positively Associated with Semen Quality: Results from the MARHCS Study in Chongqing, China

Table 3

Associations between semen parameters and kisspeptin in seminal plasma.

	Sperm concentration, 10^6/ml		Total sperm number, 10^6		Total motile sperm count, 10^6
	% 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

Semen 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.