Table 3.

Sensitivity, Specificity, and Positive and Negative Predictive Value of the Algorithm Developed From the Investigational Model, Including Baseline Clinical, Chest Radiographic, and Xpert MTB/RIF Assay Findings

Risk for Tuberculosis and Severe Disease	Sensitivity, %	Specificity, %	PPV, %	NPV,%
High risk (age <2 y or weight-for-age z score below −2)	91.8	51.6	66.7	85.6
Low risk (age ≥2 y and weight-for-age z score of at least −2)	83.3	53.8	62.5	77.8

Abbreviations: NPV, negative predictive value; PPV, positive predictive value.