Table 5 Calculation of overall agreement for classifying the conditions according to the algorithm by health workers and investigator

FHWs

Condition present

Condition absent

1

Sensitivity 94.3 % (88.2–97.4)

Condition present

100

8

108

Specificity 78.9 % (63.6–88.9)

Condition absent

6

30

36

Positive predictive value 92.5 % (86.0–96.2)

Total

106

38

144

Negative predictive value 83.3 % (68.1–92.1)

Kappa (95 % CI)