Table 2

Standardised incidence ratios (SIRs) for liver and biliary cancer in offspring by cancer in parents

	Father				Mother				Parents
Parental cancer	O	SIR	95%CI		O	SIR	95%CI		O	SIR	95%CI
Values in bold type indicate that 95% confidence interval (95% CI) does not include 1.00.
O, observed.
Upper aerodigestive tract	19	2.20	1.32	3.45	1	0.37	0.00	2.10	20	1.76	1.07	2.73
Stomach	19	0.98	0.59	1.54	10	1.05	0.50	1.94	29	1.01	0.67	1.45
Small intestine	2	1.86	0.17	6.83	3	3.09	0.58	9.16	5	2.44	0.77	5.75
Colon	16	0.90	0.51	1.46	16	0.85	0.48	1.38	32	0.87	0.60	1.23
Rectum	14	1.13	0.62	1.90	14	1.60	0.87	2.69	28	1.33	0.88	1.92
Liver and biliary	6	0.99	0.36	2.18	18	2.11	1.25	3.34	24	1.65	1.05	2.46
Pancreas	19	2.22	1.33	3.47	7	0.90	0.36	1.86	26	1.59	1.04	2.33
Lung	32	1.28	0.87	1.81	5	0.60	0.19	1.40	37	1.11	0.78	1.53
Breast					46	0.95	0.69	1.26	46	0.94	0.69	1.25
Cervix					15	1.48	0.82	2.44	15	1.48	0.82	2.44
Endometrium					15	1.25	0.69	2.06	15	1.25	0.69	2.06
Ovary					10	0.88	0.42	1.62	10	0.88	0.42	1.62
Prostate	77	1.15	0.91	1.44					77	1.15	0.91	1.44
Kidney	6	0.66	0.24	1.45	14	1.89	1.03	3.18	20	1.22	0.74	1.88
Urinary bladder	26	1.50	0.98	2.20	6	1.18	0.43	2.59	32	1.43	0.98	2.02
Melanoma	1	0.23	0.00	1.31	8	1.70	0.73	3.36	9	0.99	0.45	1.89
Skin	7	0.71	0.28	1.46	10	1.61	0.77	2.97	17	1.05	0.61	1.69
Nervous system	3	0.54	0.10	1.59	7	1.03	0.41	2.13	10	0.81	0.38	1.49
Thyroid gland					5	1.92	0.61	4.53	5	1.39	0.44	3.26
Endocrine glands	6	3.20	1.15	7.01	11	2.05	1.02	3.68	17	2.34	1.36	3.76
Non-Hodgkin’s lymphoma	6	0.91	0.33	1.98	4	0.67	0.18	1.74	10	0.80	0.38	1.47
Myeloma	4	0.93	0.24	2.40	7	1.96	0.78	4.05	11	1.40	0.69	2.51
Leukaemia	5	0.66	0.21	1.55	7	1.17	0.46	2.42	12	0.88	0.45	1.55
All	268	1.15	1.01	1.29	239	1.19	1.04	1.35	507	1.16	1.07	1.27