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Table 1 Baseline characteristics of the analysed patients (n = 81) and the excluded patients (n = 40)

From: Extended prone positioning duration for COVID-19-related ARDS: benefits and detriments

Baseline characteristics Analysed patients (n = 81) Excluded patients (n = 40) p* for diff
Age, years 60 [51–67] 60 [52–67] 0.97
BMI, kg/m2 (missing = 3) 31 [27–36] 30 [28–34] 0.50
SAPS II score 38 [30–46] 38 [28–50] 0.98
Sex, male 58 (72) 24 (60) 0.22
Active smoker 13 (16) 1 (2) 0.03
Type 2 diabetes 22 (27) 11 (28) 0.88
History of cardiovascular disease** 8 (10) 1 (2) 0.27
History of respiratory disease*** 8 (10) 4 (10) 1
Chronic kidney disease 5 (6) 4 (10) 0.48
Cirrhosis 5 (6) 0 (0) 0.17
  1. Data are presented as No. (%) or median [interquartile range]
  2. BMI, Body Mass Index; SAPS II, simplified acute physiology score
  3. *Fisher exact test or Wilcoxon test; **chronic heart failure, ischemic heart disease or peripheral arterial disease; ***chronic obstructive pulmonary disease or Asthma.
  4. Bold formatting of p value indicates a statistically significant value