QFT(QuantiFERON-TB Gold or QuantiFERON-TB Gold In-Tube)
Age (years) Negative Positive Doubtful Indeterminate Total
16ー19 33(89.2) 2(5.4) 2(5.4) 0 37(100)
20ー29 185(83.0) 21(9.4) 16(7.2) 1(0.4) 223(100)
30ー39 161(73.9) 29(13.3) 26(11.9) 2(0.9) 218(100)
40ー49 128'70.3) 34(18.7) 18(9.9) 2(1.1) 182(100)
50ー56 18(69.2) 2(7.7) 6(23.1) 0 26(100)
Total 525(76.5) 88(12.8) 68(9.9) 5(0.7) 686(100)
Table 2: QFT results of contacts in different age groups.