|
Accuracy of the f/VT ratio to predict weaning outcome in different studies |
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| Likelihood ratio (95% Cl) |
Post-test probability of weaning success (%) |
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|
|
|
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| Reference |
Patients |
Pretest probability of weaning success (%) |
Positive* |
Negative† |
Positive* |
Negative† |
|
|
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| [6] |
64 Medical patients |
56 |
2.72 (1.50-5.17) |
0.04 (0.00-0.37) |
77 (65-87) |
5 (0-32) |
| [10] |
100 Medical patients |
63 |
1.49 (1.04-2.35) |
0.27 (0.08-0.88) |
72 (64-79) |
31 (12-60) |
| [11] |
185 Postoperative patients |
92 |
1.45 (1.07-2.56) |
0.09 (0.02-0.54) |
94 (92-97) |
51 (17-86) |
| [12] |
49 Medical patients (aged >70 years) |
77 |
2.70 (0.93-11.7) |
0.36 (0.15-1.10) |
90 (76-97) |
55 (33-79) |
|
Results are expressed as likelihood ratio. *Positivetest result is a value of rapid shallow breathing index (f/VT) lower than 105or 100; †negative test result is a value of f/VT higher than105 or 100. | ||||||
Alía and Esteban Critical Care 2000 4:72 doi:10.1186/cc660 |
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