Table 1

Baseline (preintervention period) characteristics of hospitals and patients ventilated for more than 24 hours

Study groupIntervention groupControl group
Variablen/Median%/Q1; Q3n/Median%/Q1; Q3
Hospital characteristicsn=30 hospitalsn=29 hospitals
Number of beds, n (%)
 1–149310.0310.3
 150–2991033.3931.0
 300–5991240.01034.5
 600+516.7724.1
Hospital ownership, n (%)
 Non-profit826.7827.6
 Private723.3517.2
 Public1550.01655.2
Ventilation cases per hospital, median (Q1; Q3)16182; 26712978; 255
Patient characteristicsn=6038 casesn=6586 cases
Age, median (Q1; Q3)7160; 797058; 78
Sex, n (%)
 Female236839.2260339.5
 Male367060.8398360.5
In-hospital death, n (%)
 No358459.4382758.1
 Yes245440.6275941.9
Myocardial infarction, n (%)
 No570894.5629595.6
 Yes3305.52914.4
Stroke, n (%)
 No562593.2601591.3
 Yes4136.85718.7
Pneumonia, n (%)
 No559792.7608792.4
 Yes4417.34997.6
Chronic obstructive pulmonary disease (COPD), n (%)
 No557292.3618693.9
 Yes4667.74006.1
Colorectal resection, n (%)
 No595798.7652399.0
 Yes811.3631.0