TABLE 3.
Relationship of DFI and selected semen parameters to age
| Variable | 23–30 y (n = 35)a, a | 31–40 y (n = 65)b | 41–50 y (n = 39)c | 51–63 y (n = 11)d |
|---|---|---|---|---|
| Age (y) | 27.2 ± 2.25 | 35.4 ± 2.86 | 45.5 ± 2 .93 | 58.4 ± 2.92 |
| 27.4 (23, 30) | 35.1 (31, 40) | 45.0 (41, 50) | 58.0 (54, 63) | |
| DFI (%) | 12.7 ± 7.18 | 14.7 ± 7.42 | 19.6 ± 11.25 | 34.2 ± 15.08 |
| 12.6 (3.0, 32.9) | 14.5 (3.7, 36.9) | 15.9 (4.2, 44.4) | 32.2 (14.1, 58.5) | |
| HDS (%) | 12.2 ± 4.96 | 14.7 ± 7.42 | 11.7 ± 6.27 | 10.3 ± 6.63 |
| 12.3 (4.0, 28.5) | 10.8 (4.2, 27.5) | 8.9 (4.3, 27.0) | 7.6 (4.5, 27.2) | |
| Vitality (%) | 74.4 ± 7.70 | 73.2 ± 8.44 | 71.4 ± 9.28 | 65.2 ± 7.26 |
| 73.5 (63, 90) | 73.5 (44, 87) | 72.5 (46, 89) | 68.5 (53, 73) | |
| Intact acrosome (%) | 83.9 ± 5.24 | 83.1 ± 6.96 | 81.1 ± 7.93 | 79.9 ± 6.95 |
| 83.0 (74.5, 95.0) | 84.0 (55.5, 95.0) | 83.0 (58.5, 94.5) | 81.5 (70.5, 92.0) |
Note: Data presented as mean ± SD and median (min,max),
Age: P < .001 for all subgroups (mutually), DFI: P < .001 for subgroups a,b,c vs d and a vs c.
Vitality: P < .05 for subgroups a,b vs d.
Abbreviations: DFI, DNA fragmentation index; HDS, high DNA stainability.
a
Age subgroups.