Table 4 Comparison of semen parameters according to percentile of Mn concentration (ANOVA)
Mn group | N | Semen volume (ml) | Sperm density (×106/ml) | Sperm viability (%) | Progressive motility (%) | Normal morphology (%)* |
|---|---|---|---|---|---|---|
<20% | 234 | 2.6 (1.1) | 70.9 (51.9) | 71.4 (12.5) | 49.1 (13.9) | 46.2 (17.6)a |
20–39% | 232 | 2.5 (1.1) | 69.9 (37.4) | 69.2 (13.6) | 47.0 (14.2) | 41.9 (13.6)b |
40–59% | 241 | 2.4 (1.1) | 77.0 (44.6) | 69.3 (14.8) | 47.6 (13.9) | 43.0 (15.4)a,b |
60–79% | 236 | 2.4 (1.0) | 73.1 (40.0) | 69.8 (12.2) | 47.0 (11.8) | 43.0 (15.2)a,b |
≥80% | 236 | 2.5 (1.0) | 69.9 (37.3) | 69.9 (11.6) | 45.7 (11.4) | 42.6 (16.7)a,b |