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Table 4 The variable assignment of multivariate logistic regression

From: Delirium in elderly patients with COPD combined with respiratory failure undergoing mechanical ventilation: a prospective cohort study

Factors

Variables

Assignment

Delirium

Y

Yes = 1, no = 2

Age(y)

X1

 ≥ 75y = 1, < 75y = 2

BMI(kg/m2)

X2

 ≤ 19 = 1, > 19 = 2

Hypertension

X3

Yes = 1, no = 2

APACHE II score

X4

 ≥ 15 = 1, < 15 = 2

CPOT

X5

 ≥ 5 = 1, < 5 = 2

Sedation

X6

Yes = 1, no = 2

PaO2(mmHg)

X7

 ≤ 75 = 1, > 75 = 2

  1. BMI Body mass index, APACHE II acute physiology and chronic health score, CPOT critical pain observation tool, PaO2 arterial partial pressure of oxygen