Trend of the mortality rate of chronic obstructive pulmonary disease in residents in Hangzhou, 2006–2018

ObjectiveTo analyze the mortality rate of chronic obstructive pulmonary disease (COPD) and its trend in residents in Hangzhou from 2006 to 2018, and provide scientific basis for COPD prevention and control.

MethodsThe data of death cause surveillance in Hangzhou from 2006 to 2018 were collected from the chronic diseases surveillance system of Zhejiang to calculate the crude mortality rate and the standardized mortality rate of COPD in residents in Hangzhou. The annual percentage change (APC) was used to analyze the changing trend of COPD mortality.

ResultsThe crude mortality rate and the standardized mortality rate of COPD were 74.17/100 000 and 44.55/100 000 respectively in residents in Hangzhou from 2006 to 2018. The standardized mortality rate showed a decreasing trend from 2006 to 2018 and the APC was −9.52% (P＜0.001). The crude mortality rate was 82.65/100 000 in males and 65.67/100 000 in females（χ²＝860.713, P＜0.001). The standardized mortality rate showed decreasing trends in both males and females, the APC were −9.24% and −9.88%, respectively. The standardized mortality rate was 49.14/100 000 in rural areas and 41.54/100 000 in urban areas ( χ²＝8 487.052, P＜0.001), showing decreasing trends, the APC were −8.06% and −10.15%, respectively. Except those aged below 35 years and 35–44 years, the standardized mortality rate of COPD in all age groups showed a downward trend from 2006 to 2018 (P＜0.001).

ConclusionThe COPD mortality in residents in Hangzhou decreased from 2006 to 2018. More efforts are needed to reduce COPD mortality in rural residents, males and elderly population.