Table 5

Study of crude oil workers: SMRs for selected causes of death, by job, 1946–94

Cause of death (ICDA-8)		Unexposed category, >5 y White men (n=5042) p-y=98931			Producing, pumper, >5 y White men (n=3456) p-y=79128			Craft, maintenance, >5 y White men (n=2342) p-y=43798			Producing, roustabout, >5 y White men (n=3820) p-y=96183			Pipeline, field, >5 y White men (n=1456) p-y=39478
Cause of death (ICDA-8)		Observed deaths	SMR		95% CI	Observed deaths		SMR	95% CI		Observed deaths	SMR		95% CI	Observed deaths	SMR	95% CI	Observed deaths	SMR	95% CI
All causes	1046	67	63 to 71	1379	77	73 to 81	684	76	70 to 81	1260	76	72 to 80	711	72	67 to 78
All cancers (140–209)	293	80	71 to 90	322	84	75 to 93	173	86	74 to 100	310	84	75 to 94	175	84	72 to 98
Digestive system (150–159)	73	78	61 to 98	67	64	49 to 81	30	56	38 to 80	61	62	48 to 80	38	67	47 to 92
Stomach (151)	13	91	48 to 155	9	50	23 to 96	3	34	7 to 101	7	44	18 to 91	5	52	17 to 122
Large intestine (153)	29	84	56 to 121	22	58	37 to 88	13	67	35 to 114	22	62	39 to 94	20	97	59 to 150
Liver (155–156)	7	110	44 to 226	10	136	65 to 250	1	27	0 to 150	9	133	61 to 252	0	0	0 to 92
Pancreas (157)	15	82	46 to 135	19	95	57 to 149	6	58	21 to 127	17	90	53 to 145	8	74	32 to 146
Lung (162)	85	67	54 to 83	109	88	73 to 107	55	83	62 to 108	118	96	80 to 115	50	76	57 to 101
Skin (172–173)	6	85	31 to 185	5	78	25 to 182	0			3	45	9 to 132	4	127	34 to 324
Prostate (185)	34	111	77 to 155	46	122	89 to 162	29	154	103 to 221	38	114	81 to 156	28	130	86 to 188
Bladder (188)	10	97	47 to 179	12	95	49 to 165	5	79	25 to 184	9	80	36 to 152	5	70	22 to 163
Kidney (189)	5	56	18 to 130	5	55	18 to 129	6	125	46 to 273	4	45	12 to 116	1	21	0 to 116
Brain and CNS (191–192)	17	183	107 to 293	9	107	49 to 203	3	65	13 to 190	6	67	24 to 146	4	92	25 to 234
Lymphatic and haematopoietic (200–209)	38	112	79 to 154	27	77	51 to 112	24	130	84 to 194	33	96	66 to 135	25	131	85 to 194
Lymphosarcoma and reticulosarcoma (200)	2	44	5 to 159	1	19	0 to 106	2	75	8 to 270	2	40	4 to 144	2	68	8 to 246
Hodgkin's disease (201)	2	88	10 to 318	1	43	1 to 239	1	83	1 to 462	2	80	9 to 290	2	155	17 to 561
Leukaemia (204–207)	12	90	46 to 156	13	90	48 to 154	11	147	73 to 263	17	123	71 to 196	10	127	61 to 233
Other lymphatic tissue (202,203,208)	20	156	95 to 241	11	91	45 to 163	9	137	62 to 260	12	99	51 to 173	9	140	64 to 265
Benign neoplasms (210 to 239)	5	133	43 to 309	5	122	39 to 284	6	280	102 to 610	3	75	15 to 218	6	259	95 to 564

p-y = Person years.