Table 1.
Comparison of demographic data and basal and post-washing sperm analyses between groups of unexplained and male factor infertility
| Variable | Unexplained (n = 34) | Male factor (n = 31) | p* value |
|---|---|---|---|
| Age, male (year) | 30 ± 0.5 | 31.7 ± 1.1 | 0.670 |
| Age, female (year) | 28 ± 0.8 | 29.6 ± 1.1 | 0.300 |
| Infertility period (month) | 35.1 ± 4.1 | 51.1 ± 9.1 | 0.710 |
| Basal semen volume (mL) | 2.4 ± 0.1 | 3.0 ± 0.1 | 0.027 |
| Basal number of sperm count (n × 106) | 38.8 ± 3.4 | 8.8 ± 0.7 | 0.0001 |
| Basal progressive sperm motility (%) | 48.4 ± 2.6 | 39.4 ± 2.8 | 0.005 |
| Basal sperm DNA fragmentation (%) | 41.8 ± 3.7 | 46.6 ± 3.4 | 0.313 |
| Basal normal sperm morphology (%) | 1.156 ± 0.1 | 0.4 ± 0.1 | 0.009 |
| Post-swim-up number of sperm count (n × 106) | 22.3 ± 3 | 5.1 ± 0.5 | 0.0001 |
| Post-swim-up progressive sperm motility (%) | 73.9 ± 3 | 59.5 ± 3.4 | 0.002 |
| Post-swim-up sperm DNA fragmentation (%) | 28.5 ± 3.7 | 30.3 ± 3.2 | 0.373 |
| Post-gradient number of sperm count (n × 106) | 26.4 ± 3.9 | 6.4 ± 0.8 | 0.0001 |
| Post-gradient progressive sperm motility (%) | 72.2 ± 2.4 | 55.1 ± 3.3 | 0.0001 |
| Post-gradient sperm DNA fragmentation (%) | 38.7 ± 3.8 | 44 ± 3.7 | 0.245 |
Data were presented as mean ± standard error mean (SEM)
*Mann-Whitney U test and italicized p values indicate statistical significance