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Table 1 Characteristics and descriptive statistics of the whole cohort

From: Sexually transmitted infections and semen quality from subfertile men with and without leukocytospermia

Clinical characteristics Total
(n = 195)
LCS
(n = 88)
Non-LCS
(n = 107)
P
Age(year), mean ± s.d. 31.9 ± 6.3 32.4 ± 6.9 31.6 ± 5.8 0.39
BMI (kg/m2), mean ± s.d. 24.6 ± 3.3 24.1 ± 3.0 24.8 ± 3.5 0.39
Education, n (%)     
  primary school 5 (2.6) 1 (1.1) 4 (3.7) 0.32
  junior high school 40 (20.5) 21 (23.9) 19 (17.8)  
  High school 43 (22.1) 22 (25.0) 21 (19.6)  
  College/University 107 (54.8) 44 (50.0) 63 (58.9)  
Duration of infertility, n (%)     
  1 year 106 (54.4) 47 (53.4) 59 (55.1) 0.35
  2 years 47 (24.1) 25 (28.4) 22 (20.6)  
  ≥ 3 years 42 (21.5) 16 (18.2) 26 (24.3)  
Type of infertility, n (%)     
  Primary 117 (60.0) 49 (55.7) 68 (63.6) 0.26
  Secondary 78 (40.0) 39 (44.3) 39 (36.4)  
Alcohol status, n (%)     
  Nondrinkers 58 (29.7) 24 (27.3) 34 (31.8) 0.49
  drinkers 137 (70.3) 64 (72.7) 73 (68.2)  
Smoking status, n (%)     
  Nonsmokers 112 (57.4) 48 (54.5) 64 (59.8) 0.46
  Smokers 83 (42.6) 40 (45.5) 43 (40.2)  
Semen parameters     
  Abstinence time (days), mean ± s.d 4.3 ± 1.9 4.2 ± 1.9 4.3 ± 2.0 0.75
  Semen volume (ml), median (Q1, Q3) 2.9 (2.0, 4.0) 2.8 (1.9, 3.7) 3.0 (2.2,4.1) 0.04
  Sperm concentration (×106/ml), median (Q1, Q3) 79.0 (37.0, 121.6) 66.4 (28.2, 106.0) 89.5 (54.5, 135.5) 0.01
  Progressive motility (%), median (Q1, Q3) 38.0 (18.7, 51.0) 33.8 (19.1, 45.1) 41.6 (16.7, 54.6) 0.02
  Total motility (%), median (Q1, Q3) 46.0 (22.4, 59.3) 40.8 (22.5, 55.2) 50.2 (21.4, 63.8) 0.03
  Normal morphology (%), median (Q1, Q3) 5.0 (4.0, 8.0) 5.0 (3.0, 7.0) 5.0 (4.0, 8.0) 0.35
  leukocytes (×106/ml), median (Q1, Q3) 0.4 (0.1, 4.6) 4.3 (2.9, 6.5) 0.2 (0.1, 0.3) < 0.001
  AsAs (%), median (Q1, Q3) 1.5 (0, 4.0) (n = 124) 1.0 (0, 4.0) (n = 48) 2.0 (1.0, 3.8) (n = 76) 0.99
  1. BMI body mass index. Data are presented as frequency (percentage) for categorical variables and mean ± standard deviation (SD) for continuous variables if normally distributed and medians (interquartile range, IQR) if not. P values were derived from Pearson’s chi-square test and Student’s t-test for parametric comparisons and the Mann-Whitney U test for nonparametric comparisons. Q1: 25th percentile. Q3: 75th percentile