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Table 3 Baseline characteristics

From: The effect of changes to GOLD severity stage on long term morbidity and mortality in COPD

  n = 4885
Age (years) 68 (60–75)
Female 2505 (51.3%)
BMI (kg/m2)a 25.7 (22.7–29.2)
Social deprivationa
 1 - most deprived 2091 (43.4%)
 2 950 (19.7%)
 3 547 (11.3%)
 4 772 (16.0%)
 5 - most affluent 460 (9.5%)
Ruralitya
 Large Urban Areas 4357 (90.4%)
 Other Urban Areas 164 (3.4%)
 Small Towns 19 (0.4%)
 Accessible Rural 280 (5.8%)
History of hypertension medication 2363 (48.4%)
History of dyslipidaemia 1645 (33.7%)
History of renal disease 99 (2.0%)
History of cardiovascular events 766 (15.7%)
History of cardiovascular prevention 3101 (63.5%)
Charlson Score
 0 3062 (62.7%)
 1 1173 (24.0%)
 2 393 (8.0%)
 3 156 (3.2%)
 4 70 (1.4%)
 5 22 (0.5%)
 over 6 9 (0.2%)
Smoking history (pack years) 38 (25–50)
Current smoking statusa
 Current 1188 (24.3%)
 Quittingb 1551 (31.8%)
 Former 1830 (37.5%)
 Never 310 (6.4%)
FEV1(litres) 1.54 (1.15–2.05)
FEV1 as percentage of predicted 68.1 (53.7–81.6)
Modified MRC dyspnoea score 1 (1–2)
Baseline GOLD stage
 A 2420 (49.5%)
 B 1268 (26.0%)
 C 476 (9.7%)
 D 721 (14.8%)
  1. BMI body mass index, FEV1 forced expiratory volume in one second, MRC Medical Research Council, GOLD Global Initiative for Chronic Obstructive Lung Disease
  2. aData missing for some patients: BMI for 139, social deprivation & rurality for 65, smoking pack years for 72, current smoking status for 6
  3. b“quitting” means the patient is a current smoker who is either trying to or is contemplating giving up smoking
  4. Data are median (IQR) or n (%)