Factors associated with LTBI conversion detected by QFT-GIT (n = 361)*.

* The criterion used for incidence was baseline TB antigen-Nil>0.35IU/mlAmong the 252 participants with QFT-GIT positive baseline results (>0.35 IU/ml), 53 (21.0%) appeared to revert at the time of follow up (Fig 1).Factors associated with LTBI conversion detected by QFT-GIT (n = 361)*.

本研究采用的发病判定标准为：基线状态下结核抗原-阴性对照（TB antigen-Nil）孔检测值>0.35IU/ml。在252例基线结核感染T细胞斑点试验（QFT-GIT，QuantiFERON-TB Gold In-Tube）结果为阳性（>0.35 IU/ml）的受试者中，共有53例（占比21.0%）在随访时出现了检测结果转阴（图1）。*针对通过QFT-GIT检测到的潜伏性结核感染（LTBI，Latent Tuberculosis Infection）转阳相关影响因素的分析共纳入361例受试者*。