Table 2

Age-standardised prevalence of current smoking by socioeconomic status (%)

Characteristics	Han ethnic majority	Na Xi ethnic minority	Li Shu ethnic minority	Dai ethnic minority	Jing Po ethnic minority	All
Sex
Male	59.2**	67.1**	59.6**	66.9**	72.2**	64.8**
Female	1.1	0.8	11.3	0.7	23.1**	7.1
Age (years)
35–44	36.5*	34.9*	32.1*	38.5*	41.3*	36.2*
45–59	34.3	31.5	35.1	35.1	49.5	35.3
≥60	23.1	27.2	39.2	26.9	52.2	31.0
Level of education
Illiterate	38.7**	35.8*	36.1*	35.2*	49.6*	39.5*
Primary (grade 1–6)	31.0	32.5	34.2	31.3	45.9	35.3
Middle (grade 7–9) or higher	26.8	28.7	31.4	31.7	40.2	30.6
Level of annual household income
Low	24.2	27.2	35.6	37.4	46.4	33.8
Medium	28.7	33.5	33.8	36.7	48.7	36.2
High	28.1	29.1	34.2	33.8	43.2	34.4
All	30.2	31.3	35.1	33.2	47.4*	35.1

*P<0.05, **p<0.01, the χ² tests for independence were conducted for prevalence of current smoking across socioeconomic status in all five studied ethnicities.