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Table 2 Sensitivity, specificity and predictive values of Widal and stool culture in the diagnosing typhoid fever using blood culture as a standard method

From: Performance of Widal test and stool culture in the diagnosis of typhoid fever among suspected patients in Dar es Salaam, Tanzania

Test Sensitivity (%) Specificity (%) PPV (%) NPV (%) Kappa test
Stool 31.3 91.5 29.4 92.2 0.222
Widal 81.2 18.3 10.1 89.7 0.01