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Table 4 Assessment of patient characteristics, leading cause of respiratory failure, and long-term ventilation history as weaning predictors

From: Clinical evidence for respiratory insufficiency type II predicts weaning failure in long-term ventilated, tracheotomised patients: a retrospective analysis

Factor Weaning success
n = 60
Weaning failure
n = 64
OR [95% KI] p value
Age (years)
 Mean ± SD 68 ± 12 69 ± 12 0.94 [0.70, 1.28] 0.71
 Median (IQR) 69 (61–77) 71 (62–78)   
 Min–max 31–85 39–88   
Gender, n (%)
 Female 28 (55%) 23 (45%) 1 0.23
 Male 32 (44%) 41 (56%) 0.64 [0.31, 1.32]  
Leading cause of respiratory insufficiency, n (%)
 AECOPD 22 (42%) 30 (58%) 1 0.38
 Pneumonia 18 (62%) 11 (38%) 2.23 [0.88, 5.66]  
 Sepsis 8 (50%) 8 (50%) 1.36 [0.44, 4.20]  
 Other 12 (44%) 15 (56%) 1.09 [0.43, 2.79]  
Long-term HMV prior to current weaning episode, n (%)
 None 56 (58%) 41 (42%) 1 0.0004
 Yes 4 (15%) 23 (85%) 0.13 [0.04, 0.40]  
  1. Data are expressed as n (% according to weaning subgroup), mean ± SD, median (IQR), min–max, as well as missing data (missing)
  2. ALI acute lung injury, ARDS acute respiratory distress syndrome, CHF congestive heart failure, AECOPD acute exacerbated chronic obstructive pulmonary disease, IQR interquartile range, HMV home mechanical ventilation, max maximum value, min minimum value, NIV non-invasive ventilation, SD standard deviation