Table 2: Comparison between QFT-positive and QFT-negative HCWs and HIV-AC.

VariablesHCWsHIV-AC
QFT+ ( )QFT− ( ) QFT+ ( )QFT− ( )

Age; median (range)45 (21~62)23.5 (19~48)0.002*25 (19~45)31 (21~35)0.036*
Gender: male; (%)7 (46.6)9 (47.4)0.4312 (92.3)42 (97.67)0.43
Work duration->10 yrs; (%)11(73.3)6 (37.5)0.098NANANA
CD4+ count (/μL); median (range)NDNDNA611 (148~1466)356 (13~1125)0.012*
TBGL-IgG positive; (%)11 (73)5 (31)0.02*8 (61.5)25 (58.13)0.545
TBGL-IgA positive; (%)5 (33)1 (6)0.0723 (23)13 (30)0.415
TBGL-IgG+IgA positive; (%)4 (27)0 (0)0.043*2(15.4)10 (23.3)0.42
IFN-γ-nc (IU/mL) 0.9 0.0087*
Serum IgG (mg/dL) 0.2 0.5
Serum IgA (mg/dL) 0.32 0.68
OPN (ng/mL) 0.87 0.43
Leptin (ng/mL) 0.25 0.24

Abbreviations: HCWs, healthcare workers; HIV-AC, newly diagnosed cases of asymptomatic human immune-deficiency virus infection; OPN, osteopontin; ND, not determined; NA, not applicable.
mean ± SD; IFN-γ-nc: levels of IFN-γ, measured in the nonstimulated QFT-plasma samples; values for statistical differences between QFT-positive and QTF-negative groups; *significant differences ( ).