Table 4

Sociodemographic characteristics of smokers and recent ex-smokers in cohort

Demographic data	Total N=850		Current smokers N=488		Recent ex-smokers N=362		Unadjusted OR (95% CI)
Demographic data	N	Per cent	N	Per cent	N	Per cent	Unadjusted OR (95% CI)
Age, years
<20	150	17.7	97	20	53	14.6	1.00*
21–25	309	36.5	179	36.9	130	35.9	0.75 (0.5 to 1.1)
26–30	215	25.4	123	25.4	92	25.4	0.73 (0.48 to 1.1)
31–35	118	13.9	62	12.8	56	15.5	0.7 (0.37 to 0.1)
36–40	51	6.0	22	4.5	29	8.0	0.42 (0.22 to 0.79)
Over 40	4	0.5	2	0.4	2	0.6	0.55 (0.8 to 3.99)
Ethnicity
White British	751	89	447	92	304	84.9	1.00*
White Irish/other white background	32	3.8	14	2.9	18	5.0	0.53 (0.26 to 1.1)
Asian/Asian British	9	1.1	2	0.4	7	2.0	0.19 (0.04 to 0.94)
Black/Black British	7	0.8	1	0.2	6	1.7	0.11 (0.01 to 0.95)
Mixed background	38	4.5	20	4.1	18	5.0	0.76 (0.39 to 1.45)
Other	7	0.8	2	0.4	5	1.4	0.27 (0.05 to 1.4)
Qualifications held
No qualifications	155	18.2	128	26.2	27	7.5	1.00**
General Certificate of Secondary Educations or equivalent	355	41.7	213	43.7	142	39.2	0.32 (0.2 to 0.50)
AS/A-levels or equivalent	174	20.5	81	16.6	93	25.7	0.18 (0.11 to 0.30)
Degree or equivalent	133	15.6	42	8.6	91	25.1	0.1 (0.06 to 0.17)
Other	33	2.9	24	4.9	9	2.5	0.56 (0.24 to 1.35)
Age left full time education, years
16 and under	469	56.4	307	64.9	162	45.25	1.00**
17–19	219	26.4	112	23.68	107	29.89	0.55 (0.40 to 0.77)
20 or older	115	13.8	41	8.67	74	20.67	0.29 (0.19 to 0.45)
Still in full time education	28	3.4	13	2.75	15	4.19	0.46 (0.21 to 0.99)
Home ownership
Own home	166	19.6	57	11.8	109	30.1	1.00**
Do not own home	680	80.0	427	88.2	253	69.9	3.23 (2.26 to 4.6)
Current employment
In current paid work	383	45.1	164	33.6	219	60.5	1.00**
Not in current paid work	467	54.9	324	66.4	143	39.5	3.03 (2.28 to 4.01)
Current or most recent occupation manual/non-manual
In non-manual occupation	216	28.2	75	17.6	141	41.6	1.00**
In manual occupation/not applicable	549	71.8	351	82.4	198	58.4	3.33 (2.28 to 4.01)

*Significant in univariate analyses, p<0.05.
**Significant in univariate analyses, p<0.001.