Table 2.

NOS activity (nM/mg protein/hr) in seminal plasma of infertile and healthy donor groups

	Mean	Std. deviation	Std. error	95% Confidence interval		Compared groups		P-value
				Lower bound	Upper bound
G1	10.01	2.94	0.38	8.44	12.58	1	2	0.014*
							3	0.818
G2	28.49	11.25	1.45	8.83	48.15	2	1	0.014*
							3	0.037*
G3	9.93	2.87	0.37	7.15	13.70	3	1	0.818
							2	0.037*