P-value*

Normal contacts (%)

TB positive contacts (%)

Risk factors

0.63

291 (92.97)

323 (93.90)

22 (7.03)

21 (6.10)

Gender (number, %)

Male

Female

0.17

278 (95.53)

81 (94.19)

129 (90.21)

126 (91.92)

13 (4.48)

5 (5.81)

14 (9.79)

11 (8.03)

Age categories:

<15 years

16 - 24

25 - 35

+35

0.08

209 (95.87)

405 (92.24)

9 (4.13)

34 (7.76)

Income/month (SDG‡)

<500

>500

0.10

164 (97.04)

163 (91.57)

156 (92.86)

129 (92.14)

5 (2.96)

15 (8.43)

12 (7.14)

11 (7.86)

Occupation

Student

Housewife

Worker

Child

0.02

285 (91.35)

329 (95.36)

27 (8.65)

16 (4.64)

Education

Illiterate

Some education

0.27

118 (90.07)

358 (93.96)

138 (95.17)

13 (9.92)

23 (6.04)

7 (4.83)

Household size (members)

1 - 4

5 - 8

>8

0.97

596 (93.42)

18 (94.74)

42 (6.58)

1 (5.26)

House size{rooms}

1 - 2

>2

0.07

264 (43)

350 (57)

11 (25.58)

32 (74.42)

Type of building

Mud

Bricks

0.08

175 (95.63)

136 (92.52)

303 (92.66)

8 (4.37)

11 (7.48)

24 (7.34)

Relation with index case:

Grandfather/mother

Wife/husband

Son/sister

0.05

440 (94.84)

174 (94.02)

25 (5.16)

18 (5.98)

Duration of contact

<4 months

>4 months