Table 2.

Correlation between semen parameters and age in the two groups

Parameters	Year 1990-1992		Year 2010-2012
	Correlation with age	P-value	Correlation with age	P-value
Concentration	0.032	0.39	0.048	0.11
Volume	-0.067	0.75	0.028	0.35
Rapid motility (Grade A)	-0.075	0.046	0.049	0.1
Slow motility (Grade B)	0.024	0.51	-0.047	0.12
Non progressive (Grade C)	0.017	0.65	-0.063	0.037
Immotile (Grade D)	0.073	0.052	0.034	0.26
Normal morphology	-0.067	0.07	0.040	0.18
Paired t test