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| Level of SDF (%) | Men with ≥4% morphologically normal sperm cells, N (%) | Men with <4% morphologically normal sperm cells, N (%) | OR (95%CI) |
|---|---|---|---|
| 0–18 | 166 (73.12) | 110 (37.16) | 0.2173 (0.1491–0.3167)** |
| >18 | 61 (26.88) | 186 (62.84) | 4.6015 (3.1580–6.7047)** |
**, highly significant difference between compared groups at P<0.0001. Chi2 test. 95% CI, 95% confidential interval; N, number of subjects; OR, odds ratio; SDF, sperm DNA fragmentation.
