Table 2.

Proportion of chewers stopping chewing habit between men and women in different demographic characteristics

Variable	Item	% of stop chewing habit
		Male				Female
		Adjusted sample size	%	95% Confidence Interval	P-value	Adjusted sample size	%	95% Confidence Interval	P-value
Total		1237	27.5	(23.8, 31.6)		71	12.7	(7.5, 20.8)
Age group	18–34	563	21.9	(15.7, 29.7)	<.0001	17	4.3	(1.4, 12.2)	0.5351
	35–49	428	26.4	(21.1, 32.5)		29	11.7	(3.9, 30.5)
	50–64	191	40.0	(33.8, 46.6)		16	17.3	(7.4, 35.5)
	65 and above	55	50.5	(41.9, 59.1)		9	22.1	(11.2, 38.8)
Education #	Literate	54	42.5	(31.4, 54.3)	0.0003	14	16.7	(7.8, 32.3)	0.6409
	Primary school	243	35.1	(28.9, 41.7)		32	17.1	(8.3, 32.0)
	Junior high school	328	22.6	(16.5, 30.1)		9	10.3	(3.1, 28.8)
	Senior high school	538	24.8	(18.5, 32.3)		16	1.9	(0.4, 8.7)
	College and above	72	35.2	(19.2, 55.4)		0	0.0	(-, -)
Occupation	Unemployed or non-technical	564	30.8	(25.2, 37.0)	0.1301	55	16.4	(9.8, 26.1)	0.4067
	Technical	473	24.5	(19.3, 30.7)		10	0.7	(0.1, 4.9)
	Semi-professional	158	25.0	(14.2, 40.2)		6	0.0	(-, -)
	Managerial/professional and above	42	27.2	(9.6, 56.9)		0	0.0	(-, -)
Ethnicity #	Aborigines	60	7.8	(5.1, 11.9)	0.0004	36	9.8	(4.6, 19.7)	0.4538
	Non-aborigines	1173	28.6	(24.7, 32.9)		35	15.7	(7.3, 30.6)
Cigarette smoker #	Yes	1105	26.5	(22.6, 30.8)	0.0113	28	7.2	(3.2, 15.7)	0.2572
	No	128	37.1	(26.1, 49.6)		43	16.4	(9.0, 28.0)
Alcohol drinker	Yes	422	27.9	(21.1, 35.9)	0.8412	13	5.9	(2.5, 13.2)	0.4259
	No	815	27.4	(23.1, 32.1)		58	14.2	(8.0, 24.0)
Type of quid #	Betel quid	786	20.3	(16.2, 25.0)	<.0001	55	13.1	(7.2, 22.7)	0.8280
	Lao-hwa quid	259	44.1	(35.5, 53.1)		2	0.0	(-, -)
	Betel quid + Lao-hwa quid	134	31.0	(19.0, 46.3)		6	6.4	(0.8, 37.3)
	Others	50	47.9	(27.1, 69.4)		8	19.3	(6.6, 44.7)

#: 2 males with missing value in education; 4 males with missing value in ethnicity; 4 males with missing value in cigarette smoker; 8 males with missing value in type of quid