Table 4

Cohort and occupational studies of the relation between asbestos exposure and smoking jointly and the risk of lung cancer (with data only comparing groups exposed to asbestos with external references (group B))

Study (ref)^6-150	Location	Study population	Follow up period	End point	Cases	Source of diagnosis
Neuberger and Kundi30	Vöcklabruck, Austria	Asbestos cement products workers	1950–87	Mortality	49	Death certificates, medical records
Oksa et al 31		Finland		(1) Asbestos sprayers	1967–94		Incidence	(1) 3	Cancer registry
				(2) Asbestos patients				(2) 33
				(3) Silicosis patients				(3) 15
Elmes and Simpson32	Belfast, Northern Ireland	Insulation workers	1940–66	Mortality	19	Death certificates, medical records
Hughes and Weill33	New Orleans, USA	Asbestos cement products workers	1969–83	Mortality	26	Death certificates
Selikoff et al 34	New Jersey, USA	Amosite asbestos factory workers	1961–77	Mortality	50	Death certificates, medical records
Selikoff and Hammond35	New York and New Jersey, USA	Insulation workers	1943–74	Mortality	47	Death certificates, medical records
Hammond et al 36	USA and Canada	Insulation workers	1967–76	Mortality	276	Death certificates, medical records

↵6-150 First author of most papers on study; reference is to paper from main results were obtained.