Smoking behaviors before and after implementation of a smoke-free legislation in Guangzhou, China

BMC Public Health

Table 1 Demographic characteristics of all participants according to survey waves ((baseline vs evaluation survey), in Guangzhou, China

Variables	Number	Baseline survey		Evaluation survey		χ ²	p
Variables	Number	n₁	%	n₂	%	χ ²	p
Gender
Male	4418	2129	43.5	2289	44.6	1.29	0.255
Female	5617	2771	56.5	2846	55.4
Age(years)
15–24	1713	816	16.6	897	17.5	5.93	0.313
25–34	1921	926	18.9	995	19.4
35–44	2060	1013	20.7	1047	20.4
45–54	2022	997	20.3	1025	20.0
55–64	1238	589	12.1	649	12.6
65+	1081	559	11.4	522	10.1

All estimates are unweighted
n, number of participants in both surveys; n₁, number of participants in the baseline survey; n₂, number of participants surveyed in the evaluation survey; %, the proportion of participants surveyed

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