Table 1.
Baseline demographics and clinical characteristics
| Variables | N = 47 |
|---|---|
| Age, years | 68.0 [60.0–75.0] |
| Female, n (%) | 27 (57.4%) |
| Body mass index, kg/m2 | 22.0 [20.8–24.0] |
| Comorbidity, n (%) | |
| Hypertension | 31 (66.0%) |
| Diabetes mellitus | 19 (40.4%) |
| Cardiovascular disease | 10 (21.3%) |
| Respiratory disease | 7 (14.9%) |
| Chronic kidney disease | 9 (19.1%) |
| Chronic liver disease | 1 (2.1%) |
| Malignancy | 8 (17.0%) |
| Others | 6 (12.8%) |
| APACHE II at enrollment | 18.0 [17.0–20.0] |
| Principal diagnosis on admission, n (%) | |
| Pneumonia | 21 (44.7%) |
| Congestive heart failure | 9 (19.1%) |
| Extrapulmonary sepsis | 8 (17.0%) |
| Acute exacerbation of COPD | 5 (10.6%) |
| Others | 4 (8.3%) |
| Type of acute respiratory failure, n (%) | |
| Hypoxemic | 34 (72.4%) |
| Hypercapnic | 5 (10.6%) |
| Sepsis | 8 (17.0%) |
Data are presented as median [interquartile range] or n (%)
APACHE II Acute Physiology and Chronic Health Evaluation II, COPD chronic obstructive pulmonary disease