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

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

Respiratory disease		Gold mine		Copper mine		Average distance
Respiratory disease		OR^c	95 % CI	OR^c	95 % CI	OR^c	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 imputation^a	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 imputation^b	1.56	(0.87–2.79)	1.78	(0.98–3.26)	1.87	(1.05–3.35)

Abbreviations: CI confidence interval, OR odds ratio, Rhinoc. rhinoconjunctivitis
^a Adjusted for parental atopic diseases, if the child lived with both parents and if the child’s mother worked using logistic regression models
^b Adjusted for parental atopic diseases using the logistic regression models
^c Reference categories is to live to a distance above of the cut-off points (first quartile) using the logistic regression models

ISSN: 1476-069X