Table 2 Univariate analysis for demographic, epidemiological and occupational characteristics of the hospital personnel completing the study stratified for latent TB infection ^a

n

83

475

0.47

Age, years (mean ± SD)

56.1 ± 7.2

56.1 ± 8.1

0.19

 Males

45 (13.9)

279 (86.1)

0.51

 Females

38 (16.2)

196 (83.8)

• medical staff

36 (14.6)

210 (85.4)

0.45

• nursing staff

44 (16.1)

230 (83.9)

• laboratory staff

1 (4)

24 (96)

• other^c

2 (15.4)

11 (84.6)

• medical wards

33 (15)

187 (85)

0.35

• surgical wards

29 (17)

142 (83)

• other^d

21 (12.8)

146 (87.2)

Years in employment (mean ± SD)

24.1 ± 1.0

24.9 ± 0.4

0.45