Table 1. Demographic Characteristics of TB affected and TB not affected donors.

Group	N	Age (mean)	SD ±1	Gender M∶F (ratio)	% TST+
TBNA	166	28.3	12.1	83/83 (1)	61
PTB	102	31.8	16.5	44/58 (0.76)	83
a) Pmd	74	32.4	15.9	33/41 (0.8)
b) Pad	23	27	17	9/14 (0.64)

Note: TBNA = TB not affected; PTB = Pulmonary tuberculosis; Pmd = Pulmonary patients with min/mod lung involvement; Pad = Pulmonary patients with extensive lung involvement.

TST+ = Tuberculin Skin Test≥10 mm induration.