Table 4 Correlation between the status of global DNA methylation and semen parameters

Sperm concentration (Mill/ml)

− 0.189

0.009

Total sperm motility (%)

− 0.303

< 0.001

Sperm progressive motility (%)

− 0.514

< 0.001

Sperm non-progressive motility (%)

0.314

< 0.001

Non-motile sperm (%)

0.303

< 0.001

Sperm normal form (%)

− 0.498

< 0.001

Sperm abnormal form (%)

0.498

< 0.001

Sperm chromatin non-condensation (CMA3-positive)

0.304

< 0.001

Sperm DNA fragmentation (TUNEL-positive)

0.399

< 0.001