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Table 3 Crude and adjusted odds of birth of a male infant among women occupationally PCB-exposed and unexposed prior to estimated date of conception

From: Maternal exposure to polychlorinated biphenyls and the secondary sex ratio: an occupational cohort study

Estimated Cumulative PCB exposurea,
at estimated date of conception
Exposed
Women (n)
Crude
OR (95% CI)
Adjustedb
OR (95% CI)
Continuous model (log linear)    
  Per 100,000 increase 1,506 1.00 (0.98, 1.03) 1.01 (0.98, 1.03)
Categorical model    
  No exposure 1,089 1.00 (ref) 1.00 (ref)
  > 0 to <27,900 377 0.94 (0.75, 1.19) 0.93 (0.73, 1.19)
  27,900 to <108,140 376 1.14 (0.90, 1.44) 1.11 (0.87, 1.41)
  108,140 to <300,216 377 0.90 (0.72, 1.14) 0.90 (0.71, 1.15)
  300,216+ 376 1.02 (0.81, 1.29) 1.06 (0.83, 1.36)
  1. a Cumulative exposure was estimated using the combined inhalation-dermal job exposure matrix
  2. b Adjusted for the mother's date of birth, and age at birth of her first born