Table 3

Mortality following an AECOPD according to the number of exacerbations in the previous year

Frequency of severe AECOPD in the 12 months prior to a severe AECOPDNumber of deathsPerson-yearsMortality rate and 95% CI (per 1000 person-years)HR and 95% CI*
0–30 days
 0283301939 (836 to 1055)(ref.)
 1109114954 (790 to 1151)1.07 (0.85 to 1.33)
 252461123 (855 to 1473)1.29 (0.96 to 1.75)
 3+3236893 (631 to 1262)1.09 (0.75 to 1.59)
31 and up to 365 days
 06482974218 (201 to 235)(ref.)
 1196523375 (326 to 431)1.75 (1.49 to 2.06)
 251146349 (265 to 459)1.67 (1.26 to 2.23)
 3+2259371 (245 to 564)1.77 (1.15 to 2.72)
  • Northern Denmark, 2005–2009. Only severe (hospitalised) AECOPDs included.

  • *Adjusted for age (as a continuous variable), sex and comorbidities.

  • AECOPD, acute exacerbation of chronic obstructive pulmonary disease.