Table 2.

Multiple logistic regression of smoking correlates, 2005–2008.

Variable	2005		2006		2007		2008
	OR (95% CI)	p	OR (95% CI)	p	OR (95% CI)	p	OR (95% CI)	p
Age	0.97 (0.97–0.98)	<0.001	0.97 (0.97–0.98)	<0.001	0.97 (0.97–0.98)	<0.001	0.97 (0.97–0.98)	<0.001
Ethnicity
Indigene	1.03 (0.72–1.49)	0.839	1.41 (0.98–20.02)	0.057	0.82 (0.58–1.15)	0.255	0.96 (0.70–1.30)	0.809
Non-indigene	1		1		1		1
Level of education
Junior high school and below	3.57 (3.01–4.23)	<0.001	2.70 (2.27–3.20)	<0.001	2.56 (2.17–3.01)	<0.001	3.28 (2.81–3.83)	<0.001
Senior high school	2.78 (2.39–3.24)	<0.001	2.76 (2.38–3.20)	<0.001	2.28 (1.97–2.62)	<0.001	2.57 (2.25–2.94)	<0.001
Junior college or above	1		1		1
Gender
Male	17.90 (15.40–20.80)	<0.001	17.88 (15.30–20.80)	<0.001	14.65 (12.70–16.80)	<0.001	14.95 (13.00–17.10)	<0.001
Female	1		1		1
Marital status
Never married	0.73 (0.63–0.85)	<0.001	0.80 (0.69–0.93)	0.005	0.72 (0.62–0.84)	<0.001	0.92 (0.80–1.05)	0.256
Divorced/widowed/separated	2.66 (1.95–3.63)	<0.001	1.71 (1.39–2.13)	<0.001	2.02 (1.67–2.45)	<0.001	1.58 (1.29–1.92)	<0.001
Married/living together with someone	1		1		1
Average household income
Less than NT$20,000	0.61 (0.51–0.73)	<0.001	0.91 (0.76–1.10)	0.369	0.78 (0.65–0.93)	0.005	0.81 (0.70–0.94)	0.008
NT$20,001–NT$40,000	0.77 (0.67–0.88)	<0.001	0.90 (0.79–1.03)	0.151	0.82 (0.72–0.85)	0.003	0.84 (0.75–.95)	0.007
NT$40,001 or more	1		1		1
Having a job
Fulltime	1.24 (1.08–1.43)	0.002	1.28 (1.10–1.48)	<0.001	1.24 (1.08–1.41)	0.002	1.27 (1.12–1.43)	<0.001
None or part-time	1		1		1
Self-related health status
Very poor/poor/fair	2.00 (1.74–2.29)	<0.001	1.81 (1.58–2.07)	<0.001	1.81 (1.60–2.06)	<0.001	1.69 (1.50–1.90)	<0.001
Very good/good	1		1		1
Exposure to environmental tobacco smoke at home
Yes	2.54 (2.28–2.84)	<0.001	2.63 (2.35–2.93)	<0.001	2.78 (2.50–3.09)	<0.001	2.64 (2.39–2.92)	<0.001
No	1		1		1
Cox & Snell R square	0.271		0.261		0.25		0.249
Nagelkerke R square	0.401		0.39		0.371		0.373