Prognostic Role of Chronic Obstructive Pulmonary Disease and Asthma Physiology Score for in-Hospital and 1-year Mortality in Patients with Acute Exacerbations of COPD

Table 2

Baseline demographic characteristics of patients with AECOPD.

Characteristic	Dead (n = 18)	Alive (n = 222)	P Value
Age (years)	80.83 ± 6.06	76.94 ± 8.30	0.019
Sex, n (%)			0.868
Male	14 (77.8)	162 (73.0)
Female	4 (22.2)	60 (27.0)
BMI (kg/m^2)	19.48 ± 3.26	21.50 ± 3.86	0.032
Hospital stay (days)	8.22 ± 4.78	7.66 ± 2.73	0.630
Smoking status, n (%)			0.273
Never smoker	2 (11.1)	57 (25.7)
Current/ever smoker	16 (88.9)	165 (74.3)
Smoking history (pack-years)	40.11 ± 27.59	36.67 ± 35.45	0.688
COPD stage, n (%)			0.939
I	1 (5.6)	19 (8.6)
II	8 (44.4)	85 (38.3)
III	6 (33.3)	82 (36.9)
IV	3 (16.7)	36 (16.2)
CHF, n (%)	11 (61.1)	32 (14.4)	<0.001
RD, n (%)	8 (44.4)	19 (8.6)	<0.001
Exacerbations during preceding year, n (%)	15 (83.3)	103 (46.4)	0.006
Lymphocyte count (×10^9/L)	0.93 ± 0.53	1.35 ± 0.76	0.022
Percentage of neutrophils (%)	83.8 ± 10.0	75.3 ± 11.8	0.003
PH	7.36 ± 0.15	7.40 ± 0.04	0.280
PaO2 (mmHg)	85.0 ± 33.3	90.2 ± 25.7	0.425
PaCO2 (mmHg)	49.0 ± 22.3	44.9 ± 10.6	0.446
CAPS (points)	31.11 ± 10.05	16.49 ± 7.11	<0.001

CAPS, chronic obstructive pulmonary disease and asthma physiology score; CHF, congestive heart failure; RD, renal dysfunction; PaO₂, arterial oxygen tension; PaCO₂, arterial carbon dioxide tension.