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Table 3 Levels of organochloride residues (ng/g lipid) detected in serum samples in healthy women and in women diagnosed from breast cancer older than 45 years old

From: Complex organochlorine pesticide mixtures as determinant factor for breast cancer risk: a population-based case–control study in the Canary Islands (Spain)

  Healthy women (n = 49) Breast cancer women (n =105)  
  Mean ± SD Median (p5-p95) D (%) Mean ± SD Median (p5-p95) D (%) P
Lindane 16.6 ± 34.6 0.0
(0.0-104.5)
10 (20.4%) 49.5 ± 85.4 0.0
(0.0-215.2)
27 (25.7%) n.s.a
n.s.b
Aldrin 15.0 ± 27.5 0.0
(0.0-73.2)
12 (24.5%) 71.7 ± 114.3 74.8
(0.0-115.7)
76 (72.4%) <0.001 a
<0.001 b
Dieldrin 7.0 ± 16.0 0.0
(0.0-49.7)
10 (20.4%) 12.2 ± 30.0 0.0
(0.0-71.7)
22 (21.0%) n.s.a
n.s.b
Endrin 234.2 ± 466.0 0.0
(0.0-1553.1)
24 (49.0%) - - 0 (0%) n.a.a
n.a.b
Total
Cyclodienes
256.1 ± 463.6 46.5
(0.0-1553.1)
33 (67.3%) 83.9 ± 125.2 77.5
(0.0-156.7)
80 (76.2%) n.s.a
n.s.b
p,p-DDE 275.6 ± 266.2 220.8.7
(0.0-653.1)
46 (93.9%) 354.5 ± 327.3 303.8
(106.1-648.8)
102 (97.1%) n.s.a
0.003b
p,p-DDD 8.6 ± 38.3 0.0
(0.0-94.3)
3 (6.1%) 412.4 ± 412.1 126.5.1
(0.0-1094.7)
72 (68.6%) <0.001a
<0.001b
p,p-DDT 324.8 ± 395.5 205.4
(0.0-1334.6)
40 (81.6%) 153.2 ± 114.0 158.7
(0.0-327.3)
76 (72.4%) n.s.a
0.008b
Total DDTs 937.3 ± 824.2 706.0
(133.2-3017.4)
49 (100%) 1022.7 ± 684.7 892.7
(143.0-2225.8)
105 (100%) n.s.a
n.s.b
Total OCPs 1210.1 ± 1243.6 729.7
(267.9-4570.5)
49 (100%) 1156.0 ± 661.1 1057.3
(181.7-2364.8)
105 (100%) n.s.a
0.043b
  1. Abbreviations: SD, standard deviation; D, detected compound; p5-p95, percentiles 5 and 95 of the distribution; n.s., non-significant; n.a., not applicable.
  2. a χ 2 test.
  3. b Mann–Whitney U-test.