Variables

Total

N = 1326

LTBI (%)

P-value

Multivariate analysis

Odds ratio (95% CI)

P-value

Heath care facility

tertiary hospital (hospital A)

801

149 (18.6)

0.30

secondary hospital (hospital B)

525

86 (16.4)

Age range, years

20 - 29

606

47 (7.8)

< 0.001

Reference

30 - 39

362

57 (15.7)

2.22 (1.47 - 3.35)

<0.001

40 - 49

219

69 (31.5)

5.47 (3.62 - 8.26)

<0.001

≥50

139

62 (44.6)

9.58 (6.12 - 14.99)

<0.001

Sex

Female

980

150 (15.3)

<0.001

Male

346

85 (24.6)

1.19 (0.80 - 1.77)

0.40

Years working in hospitals

<11

908

102 (11.2)

<0.001

Reference

11 - 20

174

40 (23.0)

1.37 (0.85 - 2.23)

0.20

21 - 30

179

61 (34.1)

1.27 (0.71 - 2.26)

0.43

>30

65

32 (49.2)

1.88 (0.82 - 4.31)

0.14

Profession

Doctors

189

41 (21.7)

<0.001

Reference

Nurses

801

110 (13.7)

0.75 (0.45 - 1.25)

0.30

Nursing assistants, Paramedics

130

34 (26.2)

0.93 (0.52 - 1.65)

0.81

Lab workers

55

15 (27.3)

0.98 (0.46 - 2.10)

0.96

Others, including clerks

151

35 (23.2)

0.79 (0.44 - 1.41)

0.42

Risk classification

Group 1

300

51 (17.0)

0.24

Group 2

233

43 (18.5)

Group 3

633

104 (16.4)

Group 4

160

37 (23.1)