| Bacterial contamination | Positive | Negative | P |
| Number of men | 116 | 210 | |
| E. coli | 37 | - | |
| Enterococcus sp. | 73 | - | |
| Other bacterias | 6 | - | |
| Age | 39.41±0.66 | 40.03±0.46 | 0.44 |
| Semen vol. (ml) | 2.49±0.12 | 2.72±0.1 | 0.18 |
| Sperm Concentration (10x6/ml) | 105.36±5.52 | 116.64±4.15 | 0.10 |
| Sperm Vitality(%) | 74.17±1.27 | 74.16±0.92 | 0.99 |
| Progressive motility(%) | 48.43±1.22 | 50.23±0.81 | 0.21 |
| Normal morphology(%) | 13.28±0.87 | 12.9±0.3 | 0.62 |
| Round cells (10x6/ml) | 0.88±0.09 | 0.96±0.06 | 0.43 |
| DNA fragmentation | 12.26±0.64 | 11.80±0.46 | 0.56 |