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Table 3 Diagnostic classification accuracy of predicting high CVD risk at different cut-off values

From: A six question screen to facilitate primary cardiovascular disease prevention

  TP FN FP TN Sensitivity Specificity PPV LR + LR-
Cut-off ≥40 254 12 1181 4742 95.5 % 80.1 % 17.7 % 4.8 0.1
Cut-off ≥45 247 19 888 5035 92.9 % 85.0 % 21.8 % 6.2 0.1
Cut-off ≥50 198 68 438 5485 74.4 % 92.6 % 31.1 % 10.1 0.3
  1. CVD cardiovascular disease, TP true positive, FN false negative, FP false positive, TN true negative, PPV positive predictive value, LR+ positive likelihood ratio, LR- negative likelihood ratio