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Table 1 Selected environmental risk factors by setting

From: Prevalence of chronic obstructive pulmonary disease and variation in risk factors across four geographically diverse resource-limited settings in Peru

Setting Urbanization Daily use of biomass fuels Altitude
Lima Urban Rare Sea level
Tumbes Semi-urban Moderately prevalent Sea level
Puno, urban Urban Rare 3,825 meters above sea level
Puno, rural Rural Highly prevalent 3,825 meters above sea level