Table 2.
Definitions of measures of report accuracy*
| Identified in any of the confirmation sources | Report of cancer by respondent |
||
| Present | Absent | ||
| Yes | TP | FN | Sensitivity = TP/TP + FN |
| No | FP | TN | Specificity = TN/TN + FP |
| PPV = TP/TP + FP | NPV = TN/TN + FN | ||
FN = false negative; FP = false positive; NPV = negative predictive value; PPV = positive predictive value; TN = true negative; TP = true positive.