Table 1 Weighted percentages of variables used in decomposition

Smoking dummy

0 = Non-smoker

89.7%

1 = Smoker

10.3%

Smoking intensity

Number of cigarettes smoked in the last 24 h preceding the survey

(0.6)^a

 Age

Age in years

(33.8)^a

 Urban

0 = Rural

44.9%

1 = Urban

55.1%

 Gender

0 = Female

57.2%

1 = Male

42.8%

 Marital status

1 = Single/never married

57.3%

2 = Married

37.1%

3 = Widowed or divorced

5.5%

 Education level

1 = No education

8.1%

2 = Primary education

22.7%

3 = At least secondary education

69.2%

 Wealth index

1 = Poorest

15.2%

2 = Poor

18.3%

3 = Middle

19.8%

4 = Rich

24.1%

5 = Richest

22.6%

 Region

1 = Caprivi

5.4%

2 = Erongo

9.0%

3 = Hardap

4.1%

4 = Karas

4.1%

5 = Kavango

7.6%

6 = Khomas

22.1%

7 = Kunene

2.9%

8 = Ohangwena

9.0%

9 = Omaheke

2.9%

10 = Omusati

9.4%

11 = Oshana

8.9%

12 = Oshikoto

8.2%

13 = Otjozondjupa

6.4%

Sample size

8586