Table 3.

Logistic regression model for being a current smoker

Variable	Current smokers, n (%)^a	Unadjusted OR (95% CI)	Adjusted OR^b (95% CI)	P-value
Sex
Males^c	10 013 (21.5)	1	1
Females	6732 (19.2)	0.84 (0.81 to 0.88)	0.99 (0.95 to 1.03)	0.66

Age group, years
<55^c	2571 (42.8)	1	1
55–64	5082 (32.3)	0.65 (0.61 to 0.70]	0.69 (0.65 to 0.74)	<0.001
65–74	5569 (21.4)	0.37 (0.35 to 0.40]	0.42 (0.39 to 0.45)	<0.001
≥75	3523 (10.5)	0.17 (0.15 to 0.18]	0.18 (0.17 to 0.20)	<0.001

Deprivation quintile
1 (least deprived)^c	1446 (11.4)	1	1
2	2701 (15.6)	1.40 (1.28 to 1.53)	1.38 (1.27 to 1.50)	<0.001
3	3751 (19.7)	1.75 (1.59 to 1.94)	1.70 (1.55 to 1.86)	<0.001
4	4020 (24.3)	2.33 (2.12 to 2.55)	2.22 (2.04 to 2.42)	<0.001
5 (most deprived)	4827 (30.4)	2.93 (2.63 to 3.27)	2.76 (2.49 to 3.05)	<0.001

Concordant physical conditions
0^c	5082 (24.1)	1	1
1	5606 (19.3)	0.74 (0.70 to 0.78)	0.88 (0.84 to 0.93)	<0.001
≥2	6057 (19.5)	0.73 (0.70 to 0.77)	0.98 (0.93 to 1.03)	0.50

Discordant physical conditions
0^c	6130 (24.9)	1	1
1	5216 (21.3)	0.79 (0.76 to 0.83)	0.86 (0.83 to 0.90)	<0.001
≥2	5399 (16.9)	0.59 (0.56 to 0.61)	0.72 (0.69 to 0.75)	<0.001

Mental health conditions
0^c	9869 (17.9)	1	1
1	4312 (25.0)	1.45 (1.39 to 1.52)	1.56 (1.49 to 1.64)	<0.001
≥2	2564 (29.7)	1.83 (1.73 to 1.94)	2.11 (1.99 to 2.24)	<0.001

↵a Percentages are calculated from totals in each category taken from Table 1.
↵b Adjusted for all other variables.
↵c Reference standard. CI = confidence interval. OR = odds ratio.