Table 2. Incidence of cancers of the liver, gallbladder and biliary tract in England and Wales by subsite and sex per 100 000 (using 3-year rolling averages for the calculation of rates).

	Males				Females
Subsite	1971–73	1999–2001	Rate ratio	95% CI	1971–73	1999–2001	Rate ratio	95% CI
Liver, gallbladder and biliary tract (total)	3.93	6.13	1.56	1.46–1.66	3.06	3.89	1.27	1.18–1.37
Liver cell cancer	1.84	2.68	1.46	1.31–1.60	0.84	0.91	1.08	0.91–1.26
Intrahepatic bile ducts	0.11	1.33	12.19	10.92–13.46	0.09	1.06	11.94	10.68–13.20
Liver unspecified	0.27a	0.58	2.15	1.74–2.56	0.13a	0.28	2.07	1.58–2.57
Gallbladder	0.70	0.45	0.65	0.45–0.84	1.19	0.79	0.67	0.54–0.80
Extrahepatic bile ducts	0.86	0.42	0.48	0.32–0.65	0.67	0.36	0.53	0.37–0.69
Other parts of the biliary tract	0.42	0.68	1.61	1.31–1.91	0.27	0.50	1.85	1.50–2.20

CI, confidence interval.

^a1979–1981.