Time trends in socioeconomic differences in incidence rates of cancers of gastro-intestinal tract in Finland

BMC Gastroenterology

Table 3 Standardized Incidence Ratio of liver, gall bladder & biliary tract, small intestine and pancreas cancer

Cancer site	Liver cancer		Gall bladder & biliary tract cancer		Small intestine cancer		Pancreas cancer
	Obs	SIR 95% CI	Obs	SIR 95% CI	Obs	SIR 95% CI	Obs	SIR 95% CI
MEN
Social class I	89	0.97 0.78–1.19	44	0.88 0.64–1.18	47	1.85 0.36–2.46	231	0.87 0.76–0.99
Social class II	229	0.96 0.84–1.09	132	1.03 0.86–1.21	57	0.90 0.68–1.16	647	0.95 0.88–1.02
Social class III	549	1.00 0.92–1.09	287	0.98 0.87–1.10	135	0.94 0.79–1.10	1564	1.00 0.95–1.05
Social class IV	162	1.07 0.91–1.24	86	1.09 0.87–1.35	32	0.84 0.58–1.19	494	1.16 1.06–1.26
WOMEN
Social class I	37	0.88 0.62–1.22	78	0.91 0.72–1.13	21	1.34 0.83–2.05	158	1.04 0.88–1.21
Social class II	176	1.11 0.951.28	325	1.00 0.89–1.11	65	1.11 0.86–1.42	583	1.01 0.93–1.09
Social class III	267	0.95 0.84–1.07	568	0.98 0.90–1.06	98	0.99 0.80–1.20	1004	0.97 0.91–1.03
Social class IV	107	1.02 0.84–1.23	236	1.09 0.96–1.23	25	0.70 0.46–1.04	403	1.04 0.95–1.15

Liver, gall bladder & biliary tract, small intestine and pancreas cancer cases among Finnish men and women aged 45–64 at beginning of each five-year follow-up period, and standardized incidence ratios (SIR) with 95% confidence intervals (CI) in 1971–95, by social class and period. Reference: economically active Finnish population.

ISSN: 1471-230X