Table 4.

Comparison of smoking history in COPD patients between ethnic groups (n=3,330)

Ethnic group	Frequency	% currently smoking	OR for currently smoking	95% CI	% never smoked	OR for never smoked	95% CI
White	2,637	43.2	1		4.8	1
Black	416	31.5	0.56	0.44–0.71	15.6	4.9	3.4–7.1
Asian	146	34.9	0.69	0.47–1.02	19.2	6.5	3.7–11.4
Mixed	84	40.5	0.79	0.53–1.18	16.7	4.7	2.3–9.6
Chinese/other	47	21.3	0.28	0.15–0.52	27.7	10.6	4.6–24.3

Notes: Current smokers were compared with current nonsmokers and never smokers were compared with ever smokers using multiple logistic regression, controlling for age, sex, deprivation score, and practice clustering. Excludes people with no recording of ethnicity. Bold indicates statistical significance, P<0.05.

Abbreviations: OR, odds ratio; CI, confidence interval.