Table 1– Characteristics of participants by chronic obstructive pulmonary disease (COPD) status
No eventCOPD
Spirometry-definedHospitalisation
Individuals n3796441272730
Females %544953
Age yrs58 (47–68)68 (60–75)69 (62–76)
Smoking %
 Never-smokers38136
 Light smokers342723
 Heavy smokers296071
Pack-yrs12 (3–27)26 (12–42)30 (15–45)
  • Data are presented as median (interquartile range), unless otherwise stated.