Table 1.

Distribution of the participants’ age, education, body mass index (BMI), and smoking status according to wealth index

Characteristic	Wealth index
	men (n = 6892)					women (n = 7630)
	poorest	2nd	middle	4th	richest	poorest	2nd	middle	4th	richest
Age group (years):
20-29	19.1	21.7	21.6	20.8	16.9	13.1	20.0	21.4	23.6	21.9
30-39	19.5	21.8	19.9	21.3	17.5	15.4	19.9	21.2	21.5	21.9
40-49	20.9	23.4	20.3	19.3	16.1	13.5	22.1	22.0	22.7	19.7
50-59	20.3	23.0	21.9	19.5	16.1	16.7	20.6	24.9	18.5	19.3
60-69	29.0	21.9	23.0	14.7	11.4	29.0	20.3	21.4	15.9	13.4
70+	36.6	24.9	20.7	11.0	6.8	32.7	22.6	21.0	12.6	11.1
Education:
elementary	47.0	27.8	16.7	6.2	2.3	36.7	26.3	21.6	10.8	4.6
secondary	14.8	22.3	24.3	23.1	15.5	7.9	18.7	24.3	25.9	23.1
university	5.7	11.7	21.2	25.7	35.7	3.3	8.9	13.6	25.0	49.2
BMI:
<20	30.2	22.9	20.0	15.2	11.7	18.4	19.6	19.7	20.6	21.8
20-25	21.7	22.8	21.3	18.9	15.3	19.6	21.6	23.3	18.4	17.0
>25	21.1	24.8	23.1	18.3	12.7	23.0	22.1	26.1	17.2	11.5
Smoking status:
never-smoker	26.4	22.4	21.2	17.0	13.0	23.4	21.7	22.7	17.0	15.1
former smoker	21.4	21.1	22.9	17.2	17.3	8.7	20.9	22.5	21.0	26.9
current smoker	24.0	24.7	20.0	18.3	13.0	13.8	18.9	20.1	24.2	23.0