| Table 2. Statistical comparison of semen parameters between the reference group (20-25 years) and other age groups (adjusted p-values). | ||||||||
| Parameters | 25-30 | 30-35 | 35-40 | 40-45 | 45-50 | 50-55 | 55-60 | ≥60 |
|---|---|---|---|---|---|---|---|---|
| Concentration | 1 | 0.917 | 0.917 | 0.917 | 0.917 | 0.825 | 0.917 | 1 |
| Progressive motility | 0.086 | 0.014 | 0.013 | 0.002 | <0.001 | <0.001 | <0.001 | 0.013 |
| Total Sperm number | 0.627 | 0.244 | 0.244 | 0.132 | 0.125 | 0.037 | 0.125 | 0.032 |
| Morphology | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Vitality | 0.143 | 0.036 | 0.028 | 0.007 | 0.001 | <0.001 | <0.001 | 0.024 |
| DFI | 0.800 | 0.482 | 0.255 | 0.030 | 0.008 | 0.024 | 0.004 | 0.024 |
p-values were obtained from Mann-Whitney U tests comparing each age group to the reference group (20-25 years) and adjusted for multiple comparisons using the Holm correction. Bold values indicate statistical significance (adjusted p<0.05).