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Table 2 Distribution of cohorts analysed (numbers and %) by exposure metrics (BSM, B[ a ]P, time on ovens tops) grouped, for lung cancer cases and others

From: Lung cancer mortality and exposure to polycyclic aromatic hydrocarbons in British coke oven workers

			1967					1977
	*Lung Cancer*	%	*Not Lung Cancer*	%	*Total*	*Lung Cancer*	%	*Not Lung Cancer*	%	*Total*
*NSF*
BSM (mg.m ^-3 )
Nil	129	70	2853	81	2982	95	52	1973	56	2068
0-5	19	10	259	7	278	19	10	588	17	607
5-15	15	8	188	5	203	30	16	485	14	515
15+	21	11	214	6	235	40	22	468	13	508
Total	184		3514		3698	184		3514		3698
B[ a ]P (μg.m ^-3 )
Nil	129	70	2853	81	2982	95	52	1973	56	2068
0-10	18	10	302	9	320	21	11	601	17	622
10-30	17	9	171	5	188	26	14	521	15	547
30+	20	11	188	5	208	42	23	419	12	461
Total	184		3514		3698	184		3514		3698
Years on ovens tops
Nil	162	88	3302	94	3464	143	78	2867	82	3010
0-5	19	10	150	4	169	29	16	505	14	534
5+	3	2	62	2	65	12	7	142	4	154
Total	184		3514		3698	184		3514		3698
*BSC*
BSM (mg.m ^-3 )
Nil	45	75	1087	76	1132	29	48	549	38	578
0-5	9	15	204	14	213	7	12	311	22	318
5-15	6	10	98	7	104	10	17	392	27	402
15+	0	0	48	3	48	14	23	185	13	199
Total	60		1437		1497	60		1437		1497
B[ a ]P (μg.m ^-3 )
Nil	45	75	1087	76	1132	29	48	549	38	578
0-10	8	13	218	15	226	8	13	360	25	368
10-30	7	12	101	7	108	11	18	356	25	367
30+	0	0	31	2	31	12	20	172	12	184
Total	60		1437		1497	60		1437		1497
Years on ovens tops
Nil	110	86	2370	92	2480	94	73	1993	77	2087
0-5	16	13	184	7	200	18	14	441	17	459
5+	2	2	25	1	27	16	13	145	6	161
Total	128		2579		2707	128		2579		2707

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ISSN: 1471-2458

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