Skip to main content

Table 2 Number of cases, person-years, rates and rate ratios for breast cancer mortality and incidence by age at entry among attenders and non-attenders

From: Balancing harms and benefits of service mammography screening programs: a cohort study

   Breast cancer mortality
Age at entry Exposure BC deaths Person years BC mortality rate
(per 10,000)
Adjusted rate ratio (*)
50-59 Non-attenders 77 113 409 6.8 1
  Attenders 90 270 399 3.3 0.55 (0.41 - 0.75)
60-69 Non-attenders 141 151 615 9.3 1
  Attenders 94 233 543 4.0 0.49 (0.38 - 0.64)
   Breast cancer incidence
Age at entry Exposure BC cases (**) Person years BC incidence rate (per 1,000) Adjusted rate ratio (*)
50-59 Non-attenders 321 105 635 3.0 1
  Attenders 838 249 896 3.4 1.15 (1.01 - 1.31)
60-69 Non-attenders 461 142 547 3.2 1
  Attenders 745 216 309 3.4 1.10 (0.98 - 1.23)
  1. (*) Adjusted for age, marital staus and deprivation index. (**) Include in situ and invasive BC cases