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Table 5 Linear multiple regressions for determinants for serum concentrations of CB-153 (ng/g lipid) and p,p'-DDE (ng/g lipid) among Inuit men and women.a

From: Inter-population variations in concentrations, determinants of and correlations between 2,2',4,4',5,5'-hexachlorobiphenyl (CB-153) and 1,1-dichloro-2,2-bis (p-chlorophenyl)-ethylene (p,p'-DDE): a cross-sectional study of 3161 men and women from Inuit and European populations

  Inuit men Inuit women
  CB-153 p,p'-DDE CB-153 p,p'-DDE
Age, years 16 (12, 21) 31 (20, 42) 7.7 (5.2, 10) 15 (9.0, 21)
BMI, kg/m2 -b - -2.9 (-6.1, 0.2) -b
Current smoking     
   No - - Ref Ref
   Yes - - 36 (-1.5, 75) 101 (13, 189)
   Cig/day - - - -
Seafood, meals/week 53 (33, 73) 130 (80, 179) 18 (8.8, 28) 58 (36, 80)
Area     
   Nuuk Ref Ref Ref Ref
   West 87 (13, 162) 309 (127, 491) 46 (14, 78) 94 (20, 168)
   East/North 597 (454, 740) 1271 (922, 1620) 399 (335, 463) 773 (626, 921)
Primipara     
   No    Ref Ref
   Yes    26 (-7.5, 60) 60 (-18, 138)
Gestational length (weeks)    - -
Explained variancec(%) 12 (area)
24 (+age)
27 (+seafood)
12 (area)
18 (+age)
22 (+seafood)
21 (age)
26 (+area)
28 (+cig/day)
16 (area)
21 (seafood)
24 (+age)
25 (+smoking)
25 (+parity)
  1. a) The β-coefficients (with 95 % CI within brackets) are shown.
  2. b) The variable did not fulfil the criteria to be included in the final model.
  3. c) Cumulative explained variance after successive addition of determinant variables to the final multivariate model. Thus, the total explained variance is given on the lowest line.