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Table 6 Unadjusted semen characteristics by region.

From: Fertility in four regions spanning large contrasts in serum levels of widespread persistent organochlorines: a cross-sectional study

  Warsaw
N = 198
Kharkiv
N = 208
Greenland
N = 201
Sweden
N = 191
Sperm concentration × 106/ml     
   mean (SD) 88 (80) 75 (61) 72 (61) 57 (44)
   median (p5 – p95) 64 (7–258) 59 (10–193) 53 (11–178) 49 (9–166)
Total sperm count × 106     
   mean (SD) 343 (374) 255 (238) 245 (241) 182 (159)
   median (p5 – p95) 197 (19–1071) 181 (24–746) 186 (32–667) 133 (15–500)
Volume ml, mean (SD) 3.8 (1.8) 3.5 (1.9) 3.5 (1.7) 3.3 (1.7)
A+B motile, % (SD) 60 (20) 54 (22) 55 (19) 57 (21)
CASA, motile, % (SD) 42 (22) not performed 50 (21) 32 (21)
Normal morphology, % (SD) 6.7 (3.8) 7.3 (4.2) 6.9 (3.7) 8.2 (4.5)
Abstinence period a, days,     
   mean (SD) 7.7 (9.5) 3.9 (2.0) 3.5 (3.1) 3.7 (2.6)
   median (p5 – p95) 4.0 (1.0–30.0) 3.0 (1.5–7.0) 3.0 (0.5–7.0) 3.0 (1.0–8.0)
Time to analysis, minutes, mean (SD) 52 (8) 37 (12) 35 (18) 44 (12)
Season for sperm collection, %     
   Spring 19 26 32 34
   Summer 10 22 54 35
   Fall 21 24 14 31
   Winter 50 28 0 0
Fever last three months, % 9 10 13 3
Pain at urination last three months, % 2 19 3 0
Infections, vaccines or surgery last six months, % 26 72 12 8
Medicine or natural medicine use last six months, % 33 68 32 33
Spillage of semen, % 6 17 11 16
  1. a) Abstinence time only included from subjects reporting abstinence time <60 days.