Table 2. Sensitivity, specificity, positive and negative predictive values, diagnostic accuracy, positive and negative Likelihood ratios.
| Index | SENS | SPE | PPV | NPV | DA (%) | LR+ | LR− |
|---|---|---|---|---|---|---|---|
| MIP | |||||||
| General Group | 0.93 | 0.95 | 0.98 | 0.79 | 0.93 | 20.85 | 0.07 |
| Clinics | 0.99 | 0.96 | 0.98 | 0.96 | 0.98 | 24.66 | 0.01 |
| Surgical | 0.93 | 0.90 | 0.97 | 0.78 | 0.93 | 9.33 | 0.07 |
| RSBI | |||||||
| General Group | 0.84 | 0.91 | 0.97 | 0.63 | 0.85 | 9.45 | 0.17 |
| Clinics | 0.89 | 0.88 | 0.95 | 0.68 | 0.87 | 7.22 | 0.15 |
| Surgical | 0.88 | 0.85 | 0.95 | 0.65 | 0.87 | 5.86 | 0.14 |
MIP: maximal inspiratory pressure; RSBI: rapid shallow breathing index; Sens: Sensitivity; Spe: specificity; PPV: positive predictive value; NPV: negative predictive value; DA: diagnostic accuracy; LR+: positive likelihood ratio; LR−: negative likelihood ratio