Variables

Khat chewing

OR (95% CI)

P-value

Yes

No

Crude

Adjusted

Ethnicity

Amhara

41

201

1.03 (1.03, 3.19)

1.50 (0.42, 5.37)

0.535

Oromo

74

241

0.69 (0.23, 2.08)

1.02 (0.29, 3.59)

0.972

Gurage

22

48

0.46 (0.14, 1.51)

1.26 (0.33, 4.86)

0.735

Tigre

10

68

1.43 (0.40, 5.08)

2.42 (0.58, 10.06)

0.227

Other

4

19

1

1

Monthly pocket money

300 or more birr

75

331

1.58 (1.10, 2.27)*

1.52 (1.01, 2.28)*

0.045

100 - 299 birr

74

207

1

1

Source of income

Family--Yes

136

540

1.61 (0.86, 3.02)

1.28 (0.54, 3.01)

0.564

------------No

15

37

1

1

Friend----Yes

18

53

0.75 (0.42, 1.32)

1.01 (0.53, 1.99)

0.931

-----------No

133

524

1

1

Relatives------Yes

52

130

0.55 (0.38, 0.82)◊

0.58 (0.37, 0.91)◊

0.018

---------No

99

447

1

1

Own------------yes

29

78

0.66 (0.41, 1.05)

0.74 (0.40, 1.38)

0.354

------------No

122

499

1

1

Family’s main source of income

Daily labourer

5

24

1.20 (0.28, 5.16)

1.16 (0.23, 5.97)

0.869

Civil servant

36

167

1.16 (0.37, 3.68)

1.22 (0.34, 4.35)

0.758

Merchant

64

135

0.53 (0.17, 1.64)

0.58 (0.16, 2.03)

0.392

Farmer

42

235

1.40 (0.45, 4.39)

1.58 (0.44, 5.63)

0.478

Other

4

16

1

1

Family chew Khat---Yes

86

396

1.65 (1.15, 2.39)*

1.72 (1.14, 2.59)*

0.009

------No

65

181

1

1

Friend chew Khat---Yes

88

405

1.69 (1.17, 2.44)*

1.70 (1.12, 2.58)*

0.012

------No

63

172

1

1