Finding F-0984

“Rural participants had higher median exhaled CO (10 vs. 6 ppm; p=0.01) and exhaled carboxyhemoglobin (1.6% vs. 1.0%; p=0.04) than urban participants.”

A cross-sectional study of determinants of indoor environmental exposures in households with and without chronic exposure to biomass fuel smoke (2014). Environmental health : a global access science source. Page 1. CKB 6892

Structure

Source: Biomass fuel
Factor: Carbon monoxide (CO)
Outcome: Exhaled carbon monoxide
Setting: home, PE
Study design: cross-sectional study of determinants of indoor exposures in the department of Puno, Peru: households selected from a census of urban and rural communities by cooking fuel and chimney, with 24-hour indoor PM and carbon monoxide and with exhaled carbon monoxide and exhaled carboxyhaemoglobin measured in the cooks (class 4)
Effect: median 1.6
Caveat: a breath measurement in the cook, not a room concentration

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