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Table 1 Baseline demographics and clinical characteristics

From: Validation of rapid shallow breathing index displayed by the ventilator compared to the standard technique in patients with readiness for weaning

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%)
  1. Data are presented as median [interquartile range] or n (%)
  2. APACHE II Acute Physiology and Chronic Health Evaluation II, COPD chronic obstructive pulmonary disease