Abstract: Objective To study the risk factors for pulmonary tuberculosis(PTB) in the servicemen of armed forces. Methods The study included 162 cases of PTB. Each case was pair matched with one control for sex, post and age. Data was analyzed with conditional logistic regression with SAS software. Odd Ratios(ORs) were calculated for the relevant factors. Results Single-varible analysis showed that labor intensity, body mass index(BMI), Bacillus Calmette Guerin(BCG) vaccination scar, housing, history of exposure to PTB, native place and charactor associated with the incidence of PTB, with ORs of 5.12, 0.37, 0.42, 0.51, 1.82 0.57 and 1.63 respectively(P<0.05). All of the factors except for charactor entered the final regression model. Conclusion It is suggested that we should perfect inoculation of BCG and take corresponding measures according to risk factors. So we can control the epidemic situation of PTB.

Key words: Tuberculosis,pulmonay/etiology, Case-control study, BCG