Clinical factors associated with a positive TST through univariate and multivariate analyses during the two-step period.

TST, tuberculin skin test; BMI, body mass index; IQR, interquartile range; TB, tuberculosis; CXR, simple chest radiography; OR, odds ratio; CI, confidence interval.*Data could not be obtained for two participants.$Technicians were defined as technical employees performing radiologic, laboratory, pathologic, and physiotherapeutic services.