Table 4

Sensitivity, specificity, and positive and negative predictive values of the four risk factors and combinations of two, three, and four risk factors significantly associated with leptospirosis

No. of risk factors presentPercentage
SensitivitySpecificityPositive predictive valueNegative predictive value
One
    Flood water contact +ve1005453100
    Conjunctival suffusion28978372
    Abdominal pain50866477
    Skin rash28978372
Two61908079
Three2310010062
Four510010055