Research Article

Efficacious End User Measures—Part 1: Relative Class Size and End User Problem Domains

Table 8

The above two JPTs have been “tuned” to a population where the diseased population is one hundred times the undiseased population. In this environment, the cumulative results will cause the anti-CCP test to appear to outperform the RF test.
(a)

Actual RA condition
DiseasedNot diseased

Anti-CC test resultPositive670.05
Negative330.95

Totals1001

EPA670 (850–650)

(b)

Actual RA condition
Diseased Not diseased

RF test resultPositive690.15
Negative310.85

Totals1001

EPA230 (250–212)