Table 3 Exploratory: one observation per subject was selected for a final examination of sensitivity and specificity. The first occurrence (in time) of either an event or a low IPI was selected evaluated for early or on time success. Participants with neither an observed event or low IPI were marked appropriately as no event/negative test
Corresponding event (observed) | |||
LOW IPI (test) | Event + | Event − | |
Positive | 83 | 188 | |
Negative | 44 | 43 | |
Estimate | Lower 95% CI | Upper 95% CI | |
Sensitivity | 65.4% | 57.1% | 73.6% |
Specificity | 18.6% | 13.6% | 23.6% |
Negative predictive value | 49.4% | 25.1% | 36.1% |
Positive predictive value | 30.6% | 38.9% | 59.9% |