Sensitivity and specificity using alternate cutoff values.

Identification of prevalent TST+, TST converters, and TST- using i) TB Ag − Nil cutoffs, ii) combinations of TB Ag-Nil and CXCL10 Stimulated levels or CXCL10 Stimulated/Unstimulated ratio and iii) Menzies definition (excludes those with difference in TSTPr(T+|Prevalent TST+) is the percentage test-positive among those who are were TST+ at week 1–2.Pr(T+|TST Converter) is the percentage test-positive among those who are TST-converters (TST- at week 1–2 and TST+ at week 8–12).Pr(T+|TST Menzies Converter) is the percentage test-positive among those who are TST-converters (TST- at week 1–2 and TST+ at week 8–12 and change of at least 6 mm).Pr(T-| TST-) is the percentage test-negative among those who are TST-negative at weeks 1–2 and 8–12.