Finding F-0692

“Exposure to the unflued gas heaters was associ ated with increased cough reported in the evening [odds ratio (OR) = 1.16; 95% CI, 1.01–1.34] and wheeze reported in the morning (OR = 1.38; 95% CI, 1.04–1.83).”

Respiratory Health Effects of Exposure to Low-NOx Unflued Gas Heaters in the Classroom: A Double-Blind, Cluster-Randomized, Crossover Study (2010). Environmental health perspectives. Page 1. CKB 6702

Structure

Source: Unvented heaters
Factor: Nitrogen dioxide (NO₂)
Outcome: Wheeze
Population: school children
Setting: classroom, AU
Study design: double-blind, cluster-randomised crossover trial in Australian school classrooms: low-NOx unflued gas heaters against non-indoor-emitting flued gas heaters, NO2 and formaldehyde measured with passive diffusion badges, children recorded symptoms, medication use and lung function twice daily (class 3)
Effect: OR 1.38 (1.04–1.83)
Caveat: the association with wheeze was greater in atopic children

A Finding records what one published document states, verbatim and with its page. It is not a conclusion of Coridum; see the Claims that build on it.