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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