Test (RDT)

Disease (Microscopy)

Total

Yes

No

Yes

188 (a)

3 (b)

191 (a + b)

No

0 (c)

2629 (d)

2629 (c + d)

Total

188 (a + c)

2632 (b + d)

2820 (a + b + c + d)

Sensitivity

a/(a + c)

100.0%

Specificity

d/(b + d)

99.9%

Positive predictive value

a/(a + b)

94.8%

Negative predictive value

d/(c + d)

100.0%

Prevalence of the disease

(a + b)/(a + b + c + d)

6.8%

Accuracy* (extent of correct classification)

(a + d)/(a + b + c + d)

99.9%