Chronic Obstructive Pulmonary Disease-Related Mortality in Brazil, 2000-2019: A Multiple-Cause-of-Death Study.

Area of Science:

• Public Health
• Epidemiology
• Respiratory Medicine

Background:

• Chronic obstructive pulmonary disease (COPD) is a major global health concern, often underestimated and undertreated in Brazil.
• Accurate epidemiological data is crucial for effective public health interventions and policy development.

Purpose of the Study:

• To analyze the epidemiological trends of COPD mortality in Brazil from 2000 to 2019.
• To investigate COPD's role as an underlying and associated cause of death, stratified by demographics and region.
• To identify seasonal variations in COPD mortality.

Main Methods:

• Utilized multiple causes of death data from Brazil's Information System on Mortality (2000-2019).
• Evaluated national proportional mortality, trends in mortality rates (age, sex, macro-region), causes of death, and seasonal variations.
• Considered COPD as both an underlying and associated cause of death.

Main Results:

• COPD accounted for 1,132,968 deaths (5.0% proportional mortality), with 67.6% as the underlying cause.
• Standardized mortality rates decreased by 25.8% from 2000-2019, with declining trends across most demographics and regions.
• Mean age at death increased; respiratory diseases were the leading underlying causes (69.8%), and respiratory failure, pneumonia, and septicemia were major associated causes. Seasonal variations showed higher mortality in winter.

Conclusions:

• COPD represents a substantial mortality burden in Brazil, particularly in older populations.
• Despite decreasing trends, the continued significance of COPD underscores the need for improved diagnosis and treatment.
• Accurate documentation and ongoing epidemiological surveillance are vital for effective COPD prevention and control strategies in Brazil.