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Table 7 Geometric mean values and the 95% confidence interval for semen characteristics by region.

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

  Warsaw Kharkiv Greenland Swedena P overall, crude/ adjustedb
Sperm concentration, mill/ml 51 (44;58) 55 (49;61) 57 (50;64) 45 (39;52) 0.04/0.08
   Urogenital infections 23 (14; 40) 50 (30;82) 53 (47; 60) 44 (33;58) 0.22/0.02
   No urogenital infection 54 (47;62) 56 (50;64) 62 (46; 83) 47 (40;54) 0.07/0.19
Sperm countc, millions 164 (142;188) 179 (155;206) 180 (156;207) 146 (123;173) 0.08/0.22
Motile spermatozoad, % 60 (57; 63) 54 (52; 57) 55 (52; 58) 56 (53; 60) 0.02/0.02
Normal morphology, % 6.7 (6.2;7.3) 7.1 (6.5;7.6) 7.1 (6.5;7.6) 7.9 (7.2;8.7) 0.07/0.07
  1. Figures in bold indicate p < 0.05 in pair-wise comparisons with the Warsaw sample as reference (Dunnett method).
  2. a) Men that have ever fathered a child.
  3. b) Period of abstinence, count values only.|
  4. c) Restricted to men reporting no spillage.
  5. d) Arithmetical mean values.