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Table 3 Paternal level of occupational exposure to carcinogenic in the life of the indexed child.

From: Father's occupational exposure to carcinogenic agents and childhood acute leukemia: a new method to assess exposure (a case-control study)

Variablesa Cases (N = 193) Controls (N = 193) Crude OR [95% CI] Adjustedb OR [95% CI]
  N % N %   
At least one occupation with high exposure before conception of indexed child 45 23.3 28 14.5 1.79 [1.06,3.02] 1.69 [0.98,2.92]
At least one occupation with high exposure during pregnancy period of indexed child 42 21.8 26 13.5 1.79 [1.05,3.06] 1.98 [1.13,3.45]
At least one occupation with high exposure during breastfeeding period of indexed child 39 20.2 22 11.4 1.97 [1.12,3.47] 2.11 [1.17,3.78]
At least one occupation with high exposure after birth of indexed child 54 28.0 29 15.0 2.20 [1.33,3.64] 2.17 [1.28,3.66]
At least one occupation with high global exposure, considering all four periods 62 32.1 35 18.1 2.14 [1.33,3.44] 2.06 [1.24,3.42]
  1. OR, odds ratio; CI, confidence interval
  2. aOnly "highly exposed" father's values are reported; values taken as a reference and which correspond to the "non-highly exposed" fathers are not shown.
  3. bThis analysis was adjusted by age, sex, source institution, level of crowding, paternal cigarette smoking, exposures at home, and mother's occupation.