Table 2

COPD cohort demographic data

Sample size1310
Age (years) (SD)63.5 (10.07)Between 18 and 48*
Male (%)5 (38)2 (20)
Current smoker (%)3 (23)NA
FEV1 % predicted30.6 (12.6)NA
Mean FEV1/FVC ratio (SD)31.4 (7.7)NA
Exacerbations per year (SD)5.2 (4.5)NA
AntimicrobialsNone within 6 months
Prophylactic macrolides2NA
 Doxycycline5 (1 in combination)NA
  • *Individual ages of healthy volunteers not collected.

  • †Includes one on co-amoxiclav.

  • COPD, chronic obstructive pulmonary disease; FEV1, forced Eexpiratory Vvolume in 1 s; FVC, forced vital capacity; NA, not applicable.