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Table 1 Differences between dead and surviving patients (mean ± SD or %).

From: Mortality in COPD patients discharged from hospital: the role of treatment and co-morbidity

  Alive (n = 294) Dead (n = 122) p-value
Age (years) 68.2 ± 10.9 72.1 ± 8.7 0.0005
Women 54.1 46.6 0.03
Current smokers 24.6 28.7 0.39
Pack years 35.7 ± 24.5 34.3 ± 19.8 0.59
Living alone 52.6 50.8 0.74
FEV1 (% pred) 40.6 ± 19.2 33.5 ± 14.4 0.0005
≥ 2 hospitalizations in previous 12 months 30.2 52.0 <0.0001
Health status (SGRQ)    
Symptoms 63 ± 20 69 ± 16 0.006
Activity 65 ± 22 72 ± 20 0.002
Impact 44 ± 19 51 ± 19 0.001
Total 56 ± 17 63 ± 16 0.0002
Co-morbidity    
Cardio-vascular disease 42.9 50.0 0.18
Diabetes 8.5 15.6 0.03
COPD severity according to the GOLD classification (12) 0.006
GOLD stage I-II 28 15  
GOLD stage III 31 29  
GOLD stage IV 41 57