Table 1—

Characteristics of patients with and without chronic obstructive pulmonary disease(COPD)#

VariableCOPD patientsNon-COPD patientsp-valueOR (95% CI)
Subjects176252
Age yrs67.1±10.157.1±17.6<0.001
>70-yrs old84 (47.7)75 (29.8)<0.001
APS12.6±10.112.4±7.00.80
Males150 (85.2)161 (63.9)<0.001
Comorbidities
 Smoker107 (60.8)97 (38.5)<0.0012.48 (1.67–3.68)
 Chronic heart disease75 (42.6)59 (23.4)<0.0012.43 (1.60–3.69)
 Alcoholism52 (29.5)59 (23.4)0.181.37 (0.88–2.12)
 Diabetes mellitus44 (25.0)58 (23.0)0.721.11 (0.71–1.75)
 Stroke13 (7.4)22 (8.7)0.740.83 (0.40–1.70)
Shock88 (50.0)124 (49.2)0.941.03 (0.70–1.52)
Empyema4 (2.3)21 (8.3)0.010.25 (0.08–0.70)
Bacteraemia28 (15.9)42 (16.7)0.940.94 (0.56–1.59)
Rapid-spread radiography65 (36.9)134 (53.2)0.0010.51 (0.34–0.76)
Mechanical ventilation155 (88.0)183 (72.6)<0.0012.78 (1.62–4.74)
VAP10 (5.6)21 (8.3)0.390.66 (0.30–1.44)
ICU mortality rate53 (30.1)54 (21.4)0.051.58 (1.01–1.43)
LOS for survivors13.7±12.616.8±17.90.04
  • Data are presented as n, mean±sd or n (%), unless otherwise stated. OR: odds ratio; CI: confidence interval; APS: acute physiological score of Acute Physiology And Chronic Health Evaluation II score; VAP: ventilator-associated pneumonia; ICU: intensive care unit; LOS: length of stay. #: excluded patients with immunocompromise.