Table 2.

 Incidence of breast cancer in study population of women aged 55 years or more

Age (years) at start of year at risk	No of follow-up years	Incident cases of breast cancer
		Number	Rate (% per year)
55-59	1 885 536	6114	0.324
60-64	1 424 017	5238	0.368
65-69	1 279 314	4537	0.355
70-74	1 188 027	3746	0.315
75-79	1 049 682	3558	0.339
80-84	813 372	3022	0.372
85-89	504 648	2049	0.406
90-94	219 840	953	0.434
≥95	70 845	274	0.389
Total	8 435 281	29 491	0.350