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Table 2 Association between distance to the mines and respiratory diseases. Sensitivity analysis for missing data. Complete cases, multiple imputation and adjustment for potential confounders

From: Proximity to mining industry and respiratory diseases in children in a community in Northern Chile: A cross-sectional study

Respiratory disease Gold mine Copper mine Average distance
ORc 95 % CI ORc 95 % CI ORc 95 % CI
Asthma Complete cases 1.67 (0.90–3.12) 1.47 (0.79–2.74) 1.62 (0.87–3.00)
Multiple imputation 1.63 (0.91–2.93) 1.46 (0.78–2.73) 1.75 (0.96–2.99)
Adjusted multiple imputationa 1.71 (0.89–3.28) 1.33 (0.69–2.55) 1.62 (0.82–3.18)
Rhinoc. Complete cases 1.54 (0.87–2.75) 1.79 (1.02–3.16) 1.72 (1.00–3.00)
Multiple imputation 1.54 (0.87–2.74) 1.84 (1.03–3.26) 1.72 (0.98–3.00)
Adjusted multiple imputationb 1.56 (0.87–2.79) 1.78 (0.98–3.26) 1.87 (1.05–3.35)
  1. Abbreviations: CI confidence interval, OR odds ratio, Rhinoc. rhinoconjunctivitis
  2. a Adjusted for parental atopic diseases, if the child lived with both parents and if the child’s mother worked using logistic regression models
  3. b Adjusted for parental atopic diseases using the logistic regression models
  4. c Reference categories is to live to a distance above of the cut-off points (first quartile) using the logistic regression models