Trends in mortality from chronic obstructive pulmonary disease in Rio de Janeiro and Porto Alegre, Brazil, 1980-2014

Objective: to analyze age-period-cohort (APC) effects on mortality from chronic obstructive pulmonary disease (COPD) in the municipalities of Porto Alegre, RS, and Rio de Janeiro, RJ, Brazil, between 1980 and 2014. Methods: this was a time series study using corrected Mortality Information System (SIM) data; APC effects were estimated by Poisson regression, in relation to the 1935 cohort. Results: relative risk (RR) of death due to COPD for males decreased in the most recent birth cohort (1970-1974) in Porto Alegre (RR=0.39; 95% CI 0.32; 0.48) and Rio de Janeiro (RR=0.42; 95% CI 0.38; 0.48); while among women an increase in risk of death due to COPD was observed in Rio de Janeiro in more recent cohorts (RR=1.41; 95% CI 1.20; 1.67). Conclusion: risk of death due to COPD decreased among men, while risk among women in Rio de Janeiro increased.