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Table 1 Patients' characteristics at enrollment

From: Determinants of weaning success in patients with prolonged mechanical ventilation

  Successful weaning group
(n = 16)
Failed weaning group
(n = 14)
P value
Gender, male/female 9/7 10/4 NS
Age, years 67.6 ± 13.5 70.9 ± 11 NS
Body mass index 24 ± 5.6 21.6 ± 2.6 NS
SAPS II 29.6 ± 7.3 31.6 ± 6 NS
Diagnosis    NS
Post-cardiac surgery 5 4  
ALI/ARDS 5 2  
COPD exacerbation 6 8  
Duration of MV at the time of the studya 37.5 ± 19.6 (25–40) 48.9 ± 26.9 (30–60) NS
  1. aThe 25th to 75th percentiles are reported in parentheses. ALI/ARDS, acute lung injury/acute respiratory distress syndrome; COPD, chronic obstructive pulmonary disease; MV, mechanical ventilation; NS, not significant; SAPS II, Simplified Acute Physiology Score II.