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Table 5 Scoring of patient’s multifactorial lifestyle by impact points in healthy and unhealthy lifestyle groups

From: The combination matters - distinct impact of lifestyle factors on sperm quality: a study on semen analysis of 1683 patients according to MSOME criteria

  Total number Healthy lifestyle (< 3 Points)a Unhealthy lifestyle (> 2 Points)b p-value
Number of Patients 1654 1484   170   
ml/sample (mean ± sd)   2.5 ± 1.3 2.8 ± 1.6 <0.001
Mio/ml (mean ± sd)   23.9 ± 32.7 22.4 ± 23 n.s.
Mio/sample (mean ± sd)   58.5 ± 110.2 58.6 ± 68.7 n.s.
Grade a Sperm (%)   5.3 ± 8.2 4.5 ± 7.7 <0.05
Grade b Sperm (%)   32.5 ± 17.9 31.4 ± 17.5 n.s.
Grade c Sperm (%)   18.3 ± 14.4 17.7 ± 13.7 n.s.
Grade d Sperm (%)   43.9 ± 20.4 46.2 ± 20.9 n.s.
Class I (%)   6.5 ± 6.6 5.6 ± 5.9 <0.01
Class II (%)   42.8 ± 14.4 43.7 ± 14.4 n.s.
Class III (%)   50.7 ± 18.2 50.7 ± 17.5 n.s.
  1. Factors which might negatively affect sperm quality such as BMI (> 25 kg/m2), age (> 50 years), coffee (> 3 cups/day), sexual abstinence (> 2 days) and ejaculation frequency (< 4 times/month) were scored with one point and set in correlation to semen parameters. Cut-off for (un-)healthy lifestyle was set to 2 points. a 216 patients = 0 points, 656 patients = 1 point; 613 patients = 2 points; b 149 patients = 3 points; 20 patients = 4 points, 1 patient = 5 points; n.s.: not significant.