From: A pilot study of a new test to predict extubation failure
Extubation failure | Successful extubation | Total | |||
---|---|---|---|---|---|
Increased work of breathing (failed dead-space test) | 9 | 3 | 12 | Positive predictive value | 75.0% |
No increase in work of breathing (not failed dead-space test) | 13 | 127 | 140 | Negative predictive value | 90.7% |
22 | 130 | 152 | |||
Sensitivity | Specificity | ||||
40.9% | 97.7% | ||||
Likelihood ratio for a positive test | 17.8 |