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Table 1 Sperm parameters according to leukocyte concentration category

From: The association between leukocytes and sperm quality is concentration dependent

  Leukocyte concentration category Statistical comparisons between groupsa
  A B C D E A/B A/C A/D A/E
Age (years) 35.0
(29.0-40.0)
35.0
(30.0-41.0)
36.0 (31.0-41.0) 33.5 (29.0-40.0) 33.0 (27.0-39.75) 0.629 0.176 0.762 0.14
Sperm concentration
(106/mL)
2.6
(0.1-7.25)
5.5 (2.2-11.76) 4.6 (1.9-8.7) 4.6 (1.8-9.76) 3.6 (1.6-9.53) 0.001 0.001 0.002 0.014
Normal morphology
(%)
14.0
(0-26.5)
19.0 (11.25-32.0) 18.0 (11.0-37.0) 19.0
(11.25-26.75)
14.0 (7.25-25.75) 0.001 0.003 0.021 0.452
Head deformities
(%)
24.0
(0.0-35.0)
31.0 (18.25-39.0) 32.0 (22.5-39.0) 31.5 (22.5-40.0) 31.0 (20.0-39.0) 0.001 0.001 0.001 0.004
Midpiece deformities
(%)
22.0
(0.0-35.0)
29.0 (20.0-36.0) 30.0 (20.0-39.0) 32.5 (22.5-38.0) 31.5 (20.5-39.0) 0.001 0.001 0.001 0.001
Tail deformities
(%)
5.0
(0.0-11.0)
7.0 (4.0-11.0) 7.0 (3.0-10.5) 9.0 (6.0-12.0) 8.0 (4.0-12.0) 0.004 0.041 0.001 0.016
Motility grade a+b (%) 20.0
(0-45-0)
32.0 (9.0-60.75) 29.0 (10.0-46.5) 28.5 (8.25-56.75) 20.5 (10.0-39.25) 0.001 0.123 0.09 0.588
Motility grade a (%) 12.0
(0.0-31.0)
22.5 (4.25-44.0) 19.0 (3.0-36.0) 18.0 (4.25-36.75) 11.0 (0.5-27.0) 0.001 0.216 0.086 0.989
Motility grade b (%) 5.0
(0.0-13.0)
9.0 (3.0-15.0) 8.0 (0.0-15.0) 9.0 (0.0-15.0) 7.0 (0.0-13.0) 0.001 0.04 0.076 0.29
Motility grade c (%) 2.0
(0.0-8.0)
5.0 (2.0-10.0) 5.0 (0.5-11.0) 4.5 (0.25-8.0) 5.0 (0.0-10.0) 0.001 0.002 0.072 0.026
Motility grade d (%) 42.0
(1.5-76.0)
51.0 (23.2-73.5) 56.0 (31.0-87.0) 56.0 (31.0-87.0) 68.0 (35.5-85.0) 0.015 0.002 0.006 0.001
Leukocyte concentration
(106/mL)
0.0 0.25
(0.25-0.25)
0.5 (0.5-0.5) 0.75 (0.75-0.75) 1.25 (1.0-1.93)     0.001
  1. aMann-Whitney t test
  2. Category A: >0 to <0.25 × 106/mL; category B: >0.25 to <0.5 × 106/mL; category C: >0.5 to <0.75 × 106/mL; category D: >0.75 to <1 × 106/mL; category E: >1 × 106/mL. Bold denotes values that differ significantly from category A. Data are given in medians and interquartile ranges.