Abstract
Objective: To compare the prevalence of habitual snoring as cardinal symptom of sleep-disordered breathing (SDB) in schoolchildren from two communes of Santiago, presenting different levels of socioeconomic status and exposure to environmental pollution.
Methods: Cross-sectional ecological study. A sleep questionnaire was administered to parents of primary school kids from 1st through 3rd grade, from two schools, one located in the district of Puente Alto (south-east, subsidized school) and the other in Providencia (east area, private school). Pollution data were obtained from monitoring stations. Socioeconomic characterization was performed based on government sources.
Results: The levels of air pollution were higher in the south-east area, compared to the eastern sector of Santiago. Indicators of socioeconomic level were higher in the Providencia commune. The prevalence of snoring in students was higher in the school located in Puente Ailto (18.2%, 95% CI 14.0 to 21.6) compared to the school located in Providencia (0.7%, 95% CI 0.1 - 2.4).
Conclusion: The prevalence of SDB was different in the communities studied and could be attributed to environmental and socioeconomic factors. This study is a starting point for further studies on individual basis.
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