Table 3 Poisson regression analysis with estimated risk ratios for in situ and invasive breast cancer combined in Denmark adjusted for increasing background incidence, geographical differences in pre-screening incidence, and delayed start of screening in Funen.
From: Overdiagnosis in organised mammography screening in Denmark. A comparative study
RR (95% CI) | |
|---|---|
1971 (reference) | 1.0 (APC 0,37%, 0.30-0.45) |
Screening effects, women aged 50-69 years | |
First round | 2.07 (1.94 to 2.21) |
Later rounds | 1.34 (1.29 to 1.40) |
Women aged 70-74 years | |
1998-2003 | 0.89 (0.80 to 0.98) |
Women aged 70-79 years | |
1998-2003 | 0.90 (0.85-0.96) |
Pre-screening difference (screened vs. rest) | |
All ages | 0.90 (0.89 to 0.92) |