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Table 1 Candidate variables used to develop the hospital mortality prediction model

From: Epidemiology of mechanically ventilated patients treated in ICU and non-ICU settings in Japan: a retrospective database study

Type Candidate variable Category
Demographic Sex Male; female
Age Continuous variable
Clinical factors Hospital admission Scheduled, emergency
Reason for starting MV After scheduled surgery; after emergency surgery; internal medicine patients
Primary diagnosis See Table 3
Time between admission and initiation of MV Immediate; 1 day; 2–4 days; > 4 days
Renal replacement therapy Yes = 1; no = 0
Catecholamines Yes = 1; no = 0
  1. MV mechanical ventilation