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Table 4 Operating characteristics for prediction of prolonged mechanical ventilation (n = 40)

From: A simple functional marker to predict the need for prolonged mechanical ventilation in patients with Guillain-Barré syndrome

Predictive factor

Sensitivity

Specificity

PPV

NPV

Youden index

Odds ratio (95% CI)

P value

Lack of foot flexion ability at admission

0.73

0.66

0.82

0.53

0.40

5.4 (1.2-23.6)

<0.02

Lack of foot flexion ability at end of immune therapy

0.82

0.58

0.81

0.58

0.40

6.4 (1.4-28.8)

<0.01

Presence of a motor conduction block

0.72

0.71

0.85

0.53

0.45

6.8 (1.4-33.5)

<0.05

Presence of a motor conduction block and lack of foot flexion ability at end of immune therapy

0.56

1

1

0.39

0.56

 

<0.001

  1. CI, confidence interval; NPV, negative predictive value; PPV, positive predictive value.
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Critical Care

ISSN: 1364-8535