Table 1

Estimated relative risks of breast cancer (excluding ductal carcinoma in situ) in Norway

RR (95% CI)AORH counties*
1991 (reference)1.0
Annual increase 1992-51.01 (0.99 to 1.02)
Age 50-69 years:
1996-71.82 (1.70 to 1.96)
1998-91.54 (1.42 to 1.66)
20001.56 (1.42 to 1.73)
2000, age 70-74 years0.89 (0.70 to 1.12)
Non-AORH counties
All ages (1991-2000)0.87 (0.84 to 0.90)
Annual increase 1992-51.00 (0.99 to 1.01)
Age 50-69 years:
1996-71.16 (1.08 to 1.25)
1998-91.31 (1.22 to 1.41)
20001.51 (1.38 to 1.67)
  • * Akershus, Oslo, Rogaland, Hordaland.