Table 1. Basic characteristics of study populations.

Characteristics	Active TB (n=33)	LTBI (n=30)	HC (n=27)
Sex, M/F	29/4	4/26	5/22
Age (IQR)	17 [17–24]	41 [36–46]	42 [35–46]
Extrapulmonary TB, n (%)	2 (6.1)
AFB smear (+), n (%)	3 (9.1)
AFB culture (+), n (%)	15 (45.5)
Cavity, n (%)	3 (9.1)
Lung lesion, n (%)
Mild	29 (87.9)
Moderate/severe	4 (12.1)

The numbers in brackets represent percentages in each category. AFB, acid fast bacilli; LTBI, latent tuberculosis infection; HC, healthy control; M/F, male/female; IQR, interquartile range; n, number.