No. of risk factors present | Percentage | |||
---|---|---|---|---|
Sensitivity | Specificity | Positive predictive value | Negative predictive value | |
One | ||||
Flood water contact +ve | 100 | 54 | 53 | 100 |
Conjunctival suffusion | 28 | 97 | 83 | 72 |
Abdominal pain | 50 | 86 | 64 | 77 |
Skin rash | 28 | 97 | 83 | 72 |
Two | 61 | 90 | 80 | 79 |
Three | 23 | 100 | 100 | 62 |
Four | 5 | 100 | 100 | 55 |