Table 1.

Semen samples studied in the two time periods

Variable	2006–2010	2011–2015	P value
Semen samples	39	33
Sperm concentration (million/mL)	66.4	70.8	0.71
Semen volume (mL)	3.9	3.0	0.06
Progressive motility (%)	42.1	43.7	0.40
Samples without isolates	1 (3%)	1 (3%)	0.90
Number of isolates per sample	2.4	2.4	0.97
Isolates found in samples
Streptococcus species	27 (69%)	17 (52%)	0.12
Staphylococcus species	25 (64%)	20 (61%)	0.76
Lactobacillus species	3 (8%)	4 (12%)	0.53
Enterococcus species	7 (18%)	8 (24%)	0.51
Corynebacterium species	10 (26%)	11 (33%)	0.47
Others (infrequent)	14 (36%)	11 (33%)	0.82