Table 1.

Distribution of Selected Demographic Variables by Case-Control Status in the EPIC Lung Cancer Study

		All cases and controls
		Controls		Cases
		N	%	N	%
All		1,805		894
Smoking statusa	never smokers	705	39.8	96	10.9
	former smokers	659	37.2	258	29.3
	current smokers	409	23.0	526	59.8
Gender	men	1,117	61.9	556	62.2
	women	688	38.1	338	37.8
Ageb	<40	37	2.1	19	2.1
	40-49	276	15.3	133	14.8
	50-59	722	40	355	39.7
	60-69	610	33.8	307	34.3
	>70	160	8.9	80	9.0
Country	France	48	2.7	24	2.7
	Italy	278	15.4	139	15.6
	Spain	259	14.4	130	14.5
	United Kingdom	355	19.7	175	19.6
	Netherlands	241	13.4	121	13.5
	Greece	186	10.3	90	10.1
	Germany	312	17.3	157	17.6
	Sweden	126	7.0	58	6.5
Histology	SCLC			108	12.1
	Adenocarcinoma			270	30.2
	LCLC			50	5.6
	SCC			199	22.3
	Otherc			29.87	26.7

Abbreviations: EPIC, European Prospective Investigation into Cancer and Nutrition study; LCLC, large cell lung carcinoma; SCC, squamous cell carcinoma; SCLC, small cell lung carcinoma

^aInformation on smoking status was missing for 32 controls and 14 cases

^bAt the date of blood collection

^cIncluding missing histology for French study