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Table 5 Absence of bias for outdoor physical activity in dl-PCB profiles associated to mammary cancer (p-value >0.05 is non-significant)

From: Pollutants in pet dogs: a model for environmental links to breast cancer

  Median (pg/g l.w.)  
  All dogs Regular or intensive activity ≥ 2h/ week No or scarce activity ≤ 1h/ week p-value c
(n = 115) (n = 39) a (n = 39) b (Mann- Whitney)
PCB-118 254.4 309.2 252.0 0.430
PCB-156 196.6 212.5 196.6 0.343
PCB-105 45.7 47.0 44.1 0.310
PCB-114 12.9 12.7 10.9 0.284
PCB-167 8.9 9.4 8.5 0.211
  1. aDogs with regular or intense activity.
  2. bDogs with no or scarce activity.
  3. cDogs with regular or intense activity vs. Dogs with no or scarce activity.