Table 1.

Age distribution in groups for breast cancer

Decade	Study group				CPRL group
	Count	%	95% CI limits		Count	%	95% CI limits
			Lower	Upper			Lower	Upper
30-39	13	5.2%	3.1%	8.7%	27	2.9%	2.0%	4.1%
40-49	53	21.1%	16.6%	26.7%	167	17.6%	15.3%	20.2%
50-59	64	25.6%	20.6%	31.4%	205	21.6%	19.1%	24.4%
60-69	66	26.4%	21.3%	32.2%	279	29.5%	26.6%	32.4%
70-79	46	18.4%	14.1%	23.7%	207	21.9%	19.3%	24.6%
80-89	8	3.2%	1.6%	6.2%	62	6.5%	5.1%	8.3%
Total	250				947