Table 4

Performance properties of 3 inflammatory arthritis detection tool scoring algorithm cutoff values in the rheumatology triage setting.

Cutoff ValueSensitivity
(95% CI)
Specificity
(95% CI)
+LR
(95% CI)
−LR
(95% CI)
PPV
(95% CI)
NPV
(95% CI)
0.1980.870
(0.861–0.879)
0.618
(0.613–0.622)
4.167
(4.144–4.191)
0.158
(0.079–0.238)
0.471
(0.461–0.480)
0.706
(0.461–0.480)
0.2940.855
(0.846–0.865)
0.873
(0.869–0.878)
11.036
(10.981–11.092)
0.161
(0.068–0.253)
0.668
(0.657–0.679)
0.960
(0.957–0.963)
0.4000.724
(0.712–0.736)
0.927
(0.923–0.930)
11.273
(11.213–11.332)
0.299
(0.200–0.398)
0.721
(0.709–0.733)
0.929
(0.926–0.932)
  • −LR: negative likelihood ratio; +LR: positive likelihood ratio; NPV: negative predictive value; PPV: positive predictive value.