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Metrics of different RC-SI values in predicting successful catheterization (LAB-SI > 5).
| RC-SI Value | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|
| 2.51 | 100% (89.72–100) |
75% (19.41–99.37) |
97.1% (86.16–99.46) |
100% (29.24–100) |
| 4.05 | 88.2% (72.55–96.70) |
100% (39.76–100) |
100% (88.43–100) |
50% (71.52–28.48) |
PPV, positive predictive value; NPV, negative predictive value. Data are expressed as a percent and 95% confidence interval.
