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Table 2 Levels of organochloride residues (ng/g lipid) detected in serum samples in healthy women and in women diagnosed from breast cancer

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 =103) Breast cancer women (n =121)  
  Mean ± SD Median (p5-p95) D (%) Mean ± SD Median (p5-p95) D (%) P
Lindane 24.7 ± 43.0 0.0
(0.0-111.4)
28 (27.2%) 53.2 ± 88.8 0.0
(0.0-220.0)
33 (27.3%) n.s.a
n.s.b
Aldrin 27.1 ± 37.9 0.0
(0.0-100.1)
39 (37.9%) 72.5 ± 107.2 75.8
(0.0-116.4)
90 (74.4%) <0.001a
<0.001b
Dieldrin 9.5 ± 16.4 0.0
(0.0-46.2)
33 (32.0%) 12.6 ± 29.5 0.0
(0.0-72.0)
27 (22.3%) n.s.a
n.s.b
Endrin 231.4 ± 444.4 29.1
(0.0-1279.0)
60 (58.3%) - - 0 (0%) n.a.a
n.a.b
Total
Cyclodienes
268.1 ± 443.3 91.4
(0.0-1297.8)
81 (78.6%) 85.2 ± 117.7 79.9
(0.0-156.1)
95 (78.5%) n.sa
0.027b
p,p-DDE 198.0 ± 207.5 167.7
(45.0-706.0)
92(89.3%) 357.4 ± 326.0 300.1
(106.1-653.3)
118 (97.5%) 0.012a
<0.001b
p,p-DDD 21.8 ± 131.2 0.0
(0.0-129.2)
6 (5.8%) 440.3 ± 412.7 551.1
(0.0-1108.2)
87 (71.9%) <0.001a
<0.001b
p,p-DDT 319.5 ± 417.4 217.0
(0.0-1428.6)
77 (74.8%) 149.3 ± 111.7 153.0
(0.0-327.9)
88 (72.7%) n.s.a
<0.001b
Total DDTs 880.8 ± 971.9 665.0
(69.1-3622.0)
103 (100%) 1049.6 ± 679.5 979.3
(159.2-2228.7)
121 (100%) n.s.a
0.001b
Total OCPs 1173.6 ±1339.9 706.0
(242.7-5263.6)
103 (100%) 1188.1 ± 657.2 1112.8
(184.2-2375.9)
121 (100%) n.s.a
0.001b
  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.