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Table 1 Baseline characteristics of study participants

From: Effect of abdominal weight training with and without cough machine assistance on lung function in the patients with prolonged mechanical ventilation: a randomized trial

Variable AWT (n = 12)
mean ± SD
AWT + CM (n = 14)
mean ± SD
Control (n = 14)
mean ± SD
p-value
Age (years) 72.08 ± 10.88 73.50 ± 10.73 67.79 ± 9.98 0.335
 Sex (male/female) 6/6 8/6 8/6 0.917
 Weight (kg) 60.40 ± 15.91 66.43 ± 14.48 58.89 ± 9.66 0.424
 Body Mass Index (BMI) 22.29 ± 4.69 25.21 ± 5.03 22.82 ± 3.05 0.258
 Total duration of MV (days) 34.83 ± 18.52 37.36 ± 15.25 40.57 ± 16.91 0.550
 Ventilator days during RCC (days) 14.08 ± 12.44 19.14 ± 12.76 21.29 ± 14.55 0.381
 Length of stay during RCC (days) 19.33 ± 11.59 24.21 ± 11.81 25.50 ± 12.88 0.331
Mortality prediction     
 Charlson Comorbidity Index, CCI 6.83 ± 1.64 7.00 ± 2.69 6.36 ± 2 .76 0.688
 APACHE II score 14.58 ± 3.66 15.21 ± 2.81 14.07 ± 2.95 0.673
Artificial airway, n (%)     
 APACHE II score 9 (75.0) 11 (78.6) 8 (57.1) 0.420
 Tracheostomy 3 (25.0) 3 (21.4) 6 (42.9)  
Primary problems at admission to RCC, n (%)
 Pulmonary diseases 4 (33.3) 7 (50.0) 7 (50.0) 0.687
 Cardiovascular diseases 5 (41.7) 3 (21.4) 3 (21.4)  
 Neuromuscular diseases 3 (25.0) 3 (21.4) 2 (14.3)  
  1. The data are presented as mean ± standard deviation
  2. A = Abdominal weight training, AWT group, B = cough machine assisted abdominal weight training, AWT + CM group, C = Control group
  3. *Kruskal–Wallis measures analysis, p < 0.05