Table 1. Breast and ovarian cancer incidence and risk by geographic region.

	Cases observed	SIR age standardized	Cumulative risk
Breast cancer risk (<50)
LIV-Z	59	1.23 (0.93–1.58)	1 in 46
LIV-M	260	1.05 (0.93–1.19)	1 in 53
North Tyrol	915	1	1 in 57
Ovarian cancer risk (<65)
LIV-Z	19	2.13 (1.29–3.33)	1 in 99
LIV-M	74	1.34 (1.05–1.69)	1 in 146
North Tyrol	230	1	1 in 198

Abbreviations: LIV-Z, Zillertal; LIV-M, Lower Inn Valley excluding the Zillertal; SIR, standardized incidence ratio.

95% confidence interval is given in brackets. Significant values in bold.