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Tuberculosis incidence rates and ratios in ordinal strata for quantitative results of QuantiFERON Gold-In-Tube, T-SPOT.TB, and bacillus Calmette-Guérin–adjusted tuberculin skin test. P values indicate likelihood ratio tests for trend. Data are also presented as a table in the online supplement. BCG = bacillus Calmette-Guérin; CI = confidence interval; QFT-GIT = QuantiFERON Gold-In-Tube; TB = tuberculosis; TST = tuberculin skin test.
