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Table 1 Characteristics of ICU cohort (n = 17,922)

From: Red cell distribution width improves the simplified acute physiology score for risk prediction in unselected critically ill patients

Demographics  
Age (year), mean, median (SD, IQR) 63.2, 65.2 (± 17.6, 51.3 to 77.6)
Female gender, n (%) 7,717 (43.10%)
Type of ICU, n (%)  
Cardiac Care Unit 2,918 (16.28%)
Cardiothoracic Surgery Unit 3,824 (21.34%)
Medical Intensive Care Unit 6,536 (36.46%)
Surgical Intensive Care Unit 4,644 (25.91%)
Lab values on admission  
Hematocrit (%), mean, median (SD, IQR) 32.3, 32.0 (± 5.6, 28.4 to 36.0)
SAPS on admission, mean, median (SD, IQR) 13.6, 13.0 (± 5.5, 10.0 to 17.0)
Comorbidities, n (%)  
Anemia 4,225 (23.57%)
Chronic renal failure 3,641 (20.32%)
Congestive heart failure 3,301 (18.42%)
Peripheral vascular disease 1,347 (7.52%)
COPD 2,820 (15.73%)
Any cancer 2,887 (16.10%)
Diabetes 4,071 (22.71%)
  1. COPD, chronic obstructive pulmonary disease; IQR, interquartile range; SAPS, Simplified Acute Physiology Score; SD, standard deviation.