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Table 3 Odds ratios between lung cancer and selected chemical agents in analyses restricted to construction workers, in the pooled set of studies

From: Lung cancer risk among workers in the construction industry: results from two case–control studies in Montreal

Chemical agenta Never exposed Ca/Coc Ever Exposed Substantially Exposedb
Ca/Cod ORe 95 % CIf Ca/Co OR 95 % CI
Inorganic insulation dust 272/204 142/117 0.9 0.7–1.2 50/33 1.1 0.6–2.0
Soil dust 237/171 177/150 1.1 0.9–1.5 76/32 1.9 1.1–3.4
Asbestos 292/224 122/97 1.2 0.9–1.5 25/12 1.9 0.8–4.6
Crystalline silica 170/159 244/162 1.2 0.9–1.5 71/37 1.7 1.0–3.0
Portland cement 283/215 131/106 1.1 0.8–1.4 52/27 1.7 0.9–3.2
Glass fibers 346/276 68/45 1.1 0.8–1.5 14/10 1.0 0.4–2.8
Brick dust 347/268 67/53 1.1 0.8–1.6 18/9 1.4 0.5–3.6
Concrete dust 235/155 179/166 0.9 0.7–1.2 69/48 0.9 0.5–1.5
Mineral wool fibers 298/233 116/88 1.1 0.8–1.4 29/21 1.2 0.5–2.5
Calcium oxide 352/277 62/44 1.1 0.8–1.6 36/18 2.0 1.0–4.2
Calcium sulfate 227/187 187/134 1.2 0.9–1.5 76/44 1.5 0.9–2.5
Calcium carbonate 320/230 94/91 1.0 0.8–1.4 27/19 1.2 0.6–2.6
Wood dust 204/141 210/180 0.9 0.7–1.1 86/58 0.8 0.5–1.3
Hydrogen chloride 352/256 62/65 0.8 0.6–1.1 10/10 0.6 0.2–1.6
Soldering fumes 364/271 50/50 0.9 0.6–1.2 18/18 0.7 0.3–1.5
Liquid fuel combustion products 369/279 45/42 0.9 0.6–1.3 12/19 0.4 0.2–1.0
Propane combustion products 372/288 42/33 1.3 0.8–1.9 8/8 1.1 0.3–3.7
Turpentine 381/301 33/20 1.2 0.8–2.0 17/11 1.1 0.4–2.9
Asphalt 374/277 40/44 0.7 0.5–1.1 14/16 0.4 0.2–1.0
Coal tar and pitch 387/297 27/24 0.8 0.5–1.4 12/5 1.4 0.4–5.2
  1. aCriteria for selection of chemical agents: at least ten cases or ten controls with substantial exposure in the pooled studies; prevalence of exposure greater than 5 % among construction workers; and prevalence among controls at least twice as high in construction workers as in other workers
  2. bSubstantial exposure comprised subjects who had been exposed with a probable or definite reliability to medium or high concentrations for more than 5 % of their workweek and for at least 5 years
  3. cFor each chemical agent, the reference category consists of construction workers who were never exposed to the agent
  4. dNumber of cases/number of controls
  5. eOR Odds ratio adjusted for age, median family income for census tract, comprehensive smoking index, respondent status, education level and ethnicity and binary indicator for study
  6. f95 % confidence interval