Efficacious Discriminant Analysis (Classifier) Measures for End Users

Table 7

These normalized JPTs for pooled anti-CCP and RF test data were calculated from Nishimura et al.’s reported sensitivities and specificities [13]. A person without RA is far less likely to be misdiagnosed than one with the disease when the anti-CCP test is used.

(a)

		Actual RA condition
		Diseased	Not diseased
Anti-CCP test	Positive	0.67 (0.65–0.68)	0.05 (0.04–0.06)
Result	Negative	0.33 (0.32–0.35)	0.95 (0.94–0.95)
	Totals	1	1

(b)

		Actual RA condition
		Diseased	Not diseased
RF test	Positive	0.69 (0.68–0.7)	0.15 (0.14–0.16)
Result	Negative	0.31 (0.3–0.32)	0.85 (0.84–0.86)
	Totals	1	1