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Table 2 Semen parameters distributed by the degree of obesity

From: The potential role of central obesity in male infertility: body mass index versus waist to hip ratio as they relate to selected semen parameters

 Normal weight BMI < 25 (N = 438)overweight 25 < BMI < 29.9 (N = 510)obese BMI > 30 (N = 221)Kruskal-Wallis
Mean (SD)RangeMean (SD)RangeMean (SD)Rangep-value
Sperm concentration (M/ml)49.6 (50.14)0–295.2551.2 (63.5)0–681.541.1(45.7)0–2560.0362
Total sperm count (M)174.6 (190.1)0–1014.3167.3 (205.4)0–1270140.2(160.6)0–752.60.0239
Progressive motility (%)22.3 (18)0–77.520.9 (19.4)0–8019.5 (18.1)0–750.0582
Normal morphology (%)4.9 (4.2)0–21.54.9 (4.9)0–284.3(4.3)0–19.50.0455
 WHR = < 0.9 (N = 361)WHR > 0.9 (N = 808)Kruskal-Wallis  
Mean (SD)RangeMean (SD)Rangep-value  
Sperm concentration (M/ml)56.3 (56.9)0–34045.3 (54.9)0–681.50.0001  
Total sperm count (M)201.1 (216)0–1087.2148.75(178.3)0–1270<.0001  
Progressive motility (%)24.2(19.1)0–8019.9(18.3)0–800.0002  
Normal morphology (%)5.3(4.9)0–244.6(4.4)0–280.0672