Table 1.

Characteristics of subjects.

Classification		Before		After
		N	Weighted (%)	N	Weighted (%)
Total		10,802	100.0	12,245	100.0
Gender	Male	4569	49.7	5315	41.8
	Female	6233	50.3	6930	58.2
Age	20–64 years	8485	87.7	9410	77.4
	≥65 years	2317	12.3	2835	22.6
Region	Urban	8647	80.4	10,125	84.5
	Rural	2155	19.6	2120	15.5
Household income	1 (lowest)	1937	15.1	2203	17.5
	2	2771	26.6	2986	24.1
	3	3018	29.6	3449	28.2
	4 (highest)	3076	28.7	3607	30.2
Oral examination in the past year	No	8221	76.4	7770	63.1
	Yes	2581	23.6	4475	36.9
Tooth brushing frequency	<2	1241	11.1	1072	8.2
	≥2	9561	88.9	11,173	91.8
Smoking status	Past smoker/ Current non-smoker	8631	73.9	10,054	82.7
	Current smoker	2171	26.1	2191	17.3