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Table 4 Diagnostic accuracy of the working diagnoses - sensitivity, specificity and NPV.

From: Diagnostic accuracy of point-of-care testing for acute coronary syndromes, heart failure and thromboembolic events in primary care: a cluster-randomised controlled trial

   Sensitivity Specificity NPV
   n % n % n %
ACS POCT 17/19 90 183/199 92 183/185 99
  Controls 14/14 100 107/137 78 107/107 100
HF POCT 39/39 100 173/179 97 173/173 100
  Controls 10/12 83 134/139 96 134/136 99
TE POCT 14/14 100 198/204 97 198/198 100
  Controls 9/10 90 135/141 96 135/136 99
MS POCT 54/66 82 144/152 95 144/156 92
  Controls 34/53 64 96/98 98 96/115 84
Other POCT 55/81 68 132/137 96 132/158 84
  Controls 37/62 60 84/89 94 84/109 77
  1. (i) ACS, acute coronary syndromes; HF, heart failure; MS, musculoskeletal problems; NPV, negative predictive value; TE, thromboembolic events.