Table 3.

Variables associated with cigarette smoking in diabetic subjects. Figures are frequencies (per cent of row total) and odds ratios (95% confidence intervals) adjusted for each of the variables shown^a.

		Current smoker/total (%)	Odds ratio (95% CI)	P value
Sex	Men	166/901 (18)	1.00	0.019
	Women	130/945 (13)	0.71 (0.53 to 0.95)
Age	< 45	60/219 (27)	1.00	< 0.001
	45–54	49/220 (22)	0.83 (0.58 to 1.17)
	55–64	78/510 (15)	0.47 (0.29 to 0.79)
	65–74	78/541 (14)	0.41 (0.26 to 0.64)
	≥ 75	25/317 (8)	0.18 (0.11 to 0.32)
	Not known	6/39 (15)	0.71 (0.32 to 1.57)
Ethnic Group	White	189/893 (21)	1.00	< 0.001
	Afro-Caribbean	62/520 (12)	0.53 (0.36 to 0.77)
	African	10/170 (6)	0.12 (0.06 to 0.24)
	Other	29/220 (13)	0.51 (0.34 to 0.79)
	Not known	6/43 (14)	0.69 (0.27 to 1.73)
Duration of Diabetes (years)
	0–4	90/484 (18)	1.00	0.001
	5–9	86/456 (18)	1.09 (0.70 to 1.69)
	10–14	40/307 (13)	0.71 (0.54 to 0.95)
	15–19	18/175 (10)	0.49 (0.28 to 0.85)
	≥ 20	33/202 (16)	0.79 (0.48 to 1.30)
	Not known	29/222 (13)	0.73 (0.48 to 1.10)
Housing Tenure	Owner	73/655 (11)	1.00	< 0.001
	Rented	207/1072 (19)	2.02 (1.48 to 2.74)
	Not known	16/119 (13)	1.24 (0.77 to 2.00)

^acurrent smoking was not independently associated with educational attainment, car ownership, social class or type of diabetes ^bdata for 53 subjects with 'not known smoking status were omitted