|
Variable
|
Index TB cases
|
Household contacts
|
|---|
|
(n = 40)
|
(n = 174)
|
|---|
|
n
|
(%)
|
n
|
(%)
|
|---|
|
Smoking status
|
|
Never smoker
|
28
|
(70.0)
|
142
|
(81.6)
|
|
Former or current smoker
|
12
|
(30.0)
|
32
|
(18.4)
|
|
Number of cigarettes smoked per day among former or current smokers
|
|
Mean (SD)
|
3.8
|
(1.0)
|
2.9
|
(1.9)
|
|
Duration of smoking (years) among former or current smokers
|
|
< 20
|
6
|
(50.0)
|
20
|
(62.5)
|
|
≥ 20
|
6
|
(50.0)
|
12
|
(37.5)
|
|
Passive smoking status
|
|
No
|
35
|
(87.5)
|
115
|
(66.1)
|
|
Yes
|
5
|
(12.5)
|
59
|
(33.9)
|
|
Drinking status
|
|
Never drinker
|
34
|
(85.0)
|
149
|
(85.6)
|
|
Former or current drinker
|
6
|
(15.0)
|
25
|
(14.4)
|
|
Duration of drinking (years) among former or current drinkers
|
|
Mean (SD)
|
9.6
|
(3.4)
|
6.3
|
(6.1)
|
- TB tuberculosis, SD standard deviation
