Table 3 Comparison of serum Mn contents according to semen quality groups (rank sum tests)
Semen parameter | Group | N | Median | 25th–75th percentile | P value |
|---|---|---|---|---|---|
Semen volume | normal | 919 | 8.5 | 3.7–17.3 | 0.413 |
abnormal | 260 | 7.8 | 3.9–13.8 | ||
Sperm density | normal | 1123 | 8.1 | 3.6–16.2 | 0.300 |
abnormal | 56 | 10. 5 | 4.5–19.3 | ||
Sperm viability | normal | 449 | 7.7 | 2.9–15.3 | 0.031 |
abnormal | 730 | 9.0 | 4.0–16.6 | ||
Progressive motility | normal | 492 | 7.4 | 2.9–14.3 | 0.0003 |
abnormal | 687 | 9.1 | 4.4–17.7 | ||
Normal morphology | normal | 1026 | 8.1 | 3.7–15.9 | 0.283 |
abnormal | 153 | 7.7 | 2.8–15.9 |