Research Article
Cigarette-Smoking Intensity and Interferon-Gamma Release Assay Conversion among Persons Who Inject Drugs: A Cohort Study
Table 2
QFT conversion (IFN-γ ≥ 0.70 IU/mL) at 18 months by quartiles of number of cigarettes smoked among persons who inject drugs in Tijuana, Mexico, 2006–2008.
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value for the difference in QFT conversion at 18 months across quartiles was generated using the Pearson’s test. IFN-γ: interferon-gamma; QFT: QuantiFERON-TB Gold In-Tube. |