Fig. 2From: Chronic bronchitis and airflow obstruction is associated with household cooking fuel use among never-smoking women: a community-based cross-sectional study in Odisha, IndiaBox plots comparing average PM2.5 levels in homes (N = 130) stratified by cooking fuels: LPG (n = 37); Mixed (n = 45) and Solid biomass (n = 48). [Boxes represent the interquartile range (25th–75th percentiles, median indicated by horizontal line), and whiskers extend to the 5th and 95th percentiles]Back to article page