Derivation | Validation | |
Subjects n | 353 | 334 |
Tertile 1 (0–1 points) | 1.7 (2) | 0.0 (0) |
Tertile 2 (2–3 points) | 4.6 (5) | 4.8 (5) |
Tertile 3 (>4 points) | 15.5 (19) | 12.3 (14) |
c-statistic | 0.79 | 0.83 |
Sensitivity#,¶ | 19/26 = 0.73 | 14/19 = 0.74 |
Specificity#,+ | 223/327 = 0.68 | 215/315 = 0.68 |
Data are presented as % (n), unless otherwise stated. #: tertile 3 versus tertiles 1 plus 2; ¶: sensitivity (true positive/true positive plus false negative); +: specificity (true negative/true negative plus false positive).