Table 1– Stable state clinical characteristics of the 58 patients at the time of recruitment to the cohort
Age years70.2±8.2
FEV1 L1.22±0.56
FEV1 % predicted48.6±18.1
FEV1/FVC %46.6±14.2
Smoking pack-years54.0±42.1
SpO2 %94.6±2.0
BMI kg·m−226.8±5.7
London COPD cohort diary card exacerbation frequency per patient per year2.88 (1.92–4.43)
Male36 (62.1)
Current smokers11 (19.0)
Comorbidity present47 (81.0)
Congestive heart failure6 (10.3)
Ischaemic heart disease13 (22.4)
Hypertension32 (55.2)
Diabetes mellitus4 (6.9)
Patients receiving maintenance inhaled corticosteroids52 (89.6)
  • Data are presented as mean±sd, median (interquartile range) or n (%). FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; SpO2: arterial oxygen saturation measured by pulse oximetry; BMI: body mass index; COPD: chronic obstructive pulmonary disease.