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Table 4 Effects of age on semen parameters

From: Semen quality pattern and age threshold: a retrospective cross-sectional study of 71,623 infertile men in China, between 2011 and 2017

Semen parameterR2coefficientP-value
Semen volume (ml)0.007−0.09< 0.001
Sperm concentration (106/ml)0.0090.09< 0.001
Total sperm count (106)00.02< 0.001
Sperm progressive motility (PR%)0.001−0.03< 0.001
Total motile spermatozoa [(PR + NP)%]0.005−0.07< 0.001
Immotile spermatozoa (IM%)0.0060.08< 0.001