True

Classified

+

-

1417

14

217

11

1634

25

Total

1431

228

1659

Classified + if predicted Pr (D) >= 0.5

True D defined as QP! = 0

Sensitivity

Specificity

Positive predictive value

Negative predictive value

Pr (+ | D)

Pr (− | ~ D)

Pr (D | −)

Pr (~D | −)

99.02%

4.82%

86.72%

44.00%

False + rate for true ~ D

False − rate for true D

False + rate for classified +

False − rate for classified −

Pr (+ | D)

Pr (− | ~ D)

Pr (D | −)

Pr (~D | −)

95.18%

0.98%

13.28%

56.00%

Correctly classified

86.08%