Table 1: Demographic characteristics of COPD deaths in Guangzhou, China, 2007–2011.

From: The burden of COPD mortality due to ambient air pollution in Guangzhou, China

FactorGroupsCOPD deaths (%)
Age group<65 years527 (5.2)
≥65 years9 568 (94.8)
GenderMale6 063 (60.1)
Female4 032 (39.9)
Educational attainment#Low7154 (73.2)
High2624 (26.8)
Total 10 095 (100.0)
  1. #There were 317 subjects for whom information about educational attainments was missing, so we calculated the proportion as the number of each category divided by the sum of two categories.