Table 2.

Predictors of D1 smoker in General Lifestyle Survey 2000–10

	Odds of fulfilling definition D1 criteria 2000–10
	n	Unadjusted OR (95% CI)	P-value for trend	Adjusted ORa (95% CI)	P-value for trend
Gender
Female	13 530	1.00	0.155	1.00	0.026
Male	12 755	1.04 (0.99–1.10)		1.06 (1.01–1.12)
Age group (years)
26–34	5 866	1.00	<0.001	1.00	<0.001
35–49	9 796	1.07 (0.99–1.15)		1.07 (0.99–1.15)
50–59	5 116	1.40 (1.29–1.53)		1.41 (1.29–1.53)
60+	5 507	2.60 (2.40–2.82)		2.59 (2.39–2.81)
Socio-economic status
High	6 565	1.00	<0.001	1.00	0.001
Intermediate	11 817	1.05 (0.98–1.12)		1.00 (0.93–1.07)
Low	6 800	1.18 (1.10–1.27)		1.08 (1.00–1.17)
Missingb	1 103	1.19 (1.04–1.37)		1.26 (1.10–1.45)
Survey year
2000	2 537	1.00	0.104	1.00	0.760
2001	2 703	1.04 (0.93–1.17)		1.04 (0.92–1.17)
2002	2 525	0.96 (0.85–1.09)		0.96 (0.85–1.09)
2003	2 974	1.04 (0.92–1.16)		1.04 (0.93–1.17)
2004	2 430	0.92 (0.81–1.04)		0.92 (0.82–1.05)
2005	3 360	0.92 (0.82–1.03)		0.91 (0.81–1.02)
2006	2 356	0.88 (0.78–1.00)		0.87 (0.77–0.98)
2007	2 023	0.96 (0.84–1.09)		0.93 (0.81–1.06)
2008	1 953	1.12 (0.98–1.27)		1.06 (0.93–1.21)
2009	1 775	1.13 (1.00–1.29)		1.04 (0.91–1.19)
2010	1 649	1.10 (0.96–1.26)		1.01 (0.88–1.16)

^aAdjusted for all other variables in the table.

^bMissing data excluded from test for trend in odds. OR: odds ratio; CI: confidence interval.