Table 8.
Sensitivity, specificity, and Youden’s index for various operationalization of self-reported SCC in Petersen MCI at baseline for dementia after 2 to 7 years of follow-up.
| Follow-up year (# of participants) | SCC definition | Sensitivity | Specificity | Youden’s index |
|---|---|---|---|---|
| 2 (800) | Petersen with no SCC | 0.861 | 0.508 | 0.369 |
| Petersen + any self-reported SCC | 0.787 | 0.563 | 0.351 | |
| Petersen + high avg. self-reported SCC | 0.491 | 0.821 | 0.312 | |
| 3 (615) | Petersen with no SCC | 0.858 | 0.521 | 0.379 |
| Petersen + any self-reported SCC | 0.783 | 0.575 | 0.359 | |
| Petersen + high avg. self-reported SCC | 0.482 | 0.831 | 0.314 | |
| 5 (381) | Petersen with no SCC | 0.853 | 0.541 | 0.394 |
| Petersen + any self-reported SCC | 0.777 | 0.594 | 0.371 | |
| Petersen + high avg. self-reported SCC | 0.469 | 0.846 | 0.316 | |
| 7 (233) | Petersen with no SCC | 0.848 | 0.564 | 0.411 |
| Petersen + any self-reported SCC | 0.770 | 0.615 | 0.385 | |
| Petersen + high avg. self-reported SCC | 0.456 | 0.861 | 0.317 |