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Table 3 Distribution and Odds ratios for education in models including smoking, alcohol consumption and occupational indices

From: Occupation and educational inequalities in laryngeal cancer: the use of a job index

  Cases Controls Univariate Adjusted for smokingband alcoholc Adjusted for smokingband alcoholc Adjusted for smokingband alcoholc Adjusted for smokingband alcoholc
      + OJId + PJI + PSId + CAId
  N (%) N (%) ORa(95% CI) ORa(95% CI) ORa(95% CI) ORa(95% CI) ORa(95% CI)
Years of school        
More than 10 years 11 (5.3) 161 (22.9) 1.0 1.0 1.0 1.0 1.0
10 years 16 (7.7) 105 (15.0) 2.2 (0.99-5.0) 1.7 (0.7-3.9) 1.5 (0.6- 3.6) 1.5 (0.6- 3.7) 1.5 (0.6- 3.6)
Less than 10 years 181 (87.0) 436 (62.1) 6.0 (3.1- 11.4) 4.7 (2.4-9.3) 3.2 (1.5- 6.7) 3.2 (1.5- 6.8) 3.0 (1.4-6.5)
  1. aOR, odds ratio; CI, confidence interval. All models were stratified by age.
  2. bSmoking variables: quitting smoking, smoking status in pack-years (0, <20, 20–40, >40).
  3. cAlcohol variables: alcohol consumption in grams ethanol/day (<25, 25–75, >75).
  4. dOJI, Overall Job Demand; PJI, Physical Job Demand; PSI, Psycho-social job demand; CAI, Carcinogenic Agent Exposure. The average of all indices per person for all lifetime performed jobs; per 2 units increase of the respective indices.