The role of high altitude on COPD
COPD
REGRESSION, COPD, RESPIRATORY DISEASE, CHRONIC OBSTRUCTIVE PULMONARY DISEASE
Biomass as fuel and ethnic minorities almost occurred at high altitudes (After matching, 699 participants were retained in each group; the two populations have similar distributions of PS and comparable characteristics (SMD < 0.2, Distributions of propensity scores of participants before and after matching.Effect of altitude on the risk of COPD by logistic regression model.COPD, chronic obstructive pulmonary disease; OR, odd ratio; CI, confidence interval; PSM, propensity score matching.Adjusting age, sex, childhood hospital admission for severe respiratory disease, education level, coal as fuels, occupational exposure, smoking, BMI.Matching age, sex, childhood hospital admission for severe respiratory disease, education level, coal as fuels, occupational exposure, smoking, BMI.Bold values denote significant 