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. 2014 Oct 24;14:782. doi: 10.1186/1471-2407-14-782

Table 1.

Screened women, screen detected cancers, interval cancers and background annual incidence by screening location in primarily initial screening rounds

Reference Screening program location Year (of invitation) Age Screened women Screen-detected cases Interval cancers Pct. of initial screens [Screen-detected per 10.000] [Interval cancers per 10.000] Background annual incidence rate per 10.000 Inline graphic Inline graphic
Mammography screening evaluation group [5] Copenhagen, Denmark 1991-‘93 50-69 30,362 360 52 100 118.6 17.3 25.4 0.34 0.13 (0.10-0.16)
Njor et al. [6] Funen, Denmark 1993-‘95 50-69 41,480 398 87 100 95.9 21.2 24.2 0.43 0.18 (0.15-0.21)
Törnberg et al. [7] Stockholm, Sweden 1989-‘97 50-69 188,032 1,108 382 100 58.9 20.4 25.8 0.40 0.26 (0.24-0.28)
Törnberg et al. [7] Four counties, Norway 1996-‘97 50-69 126,779 852 207 100 67.2 16.4 20.0 0.41 0.20 (0.18-0.22)
Hofvind et al. [4] NBCSP, Norway 1996-‘05 50-69 367,428a 2,351 669 100 64.0 18.3 18.0 0.51 0.22 (0.21-0.23)
Törnberg et al. [7] Marseille, France 1993-‘98 50-69 103,946 483 179 100 46.5 17.3 20.1 0.43 0.27 (0.24-0.30)
Törnberg et al. [7] Strasbourg, France 1989-‘97 50-65 63,235 328 129 100 51.9 20.5 22.6 0.45 0.28 (0.24-0.32)
Törnberg et al. [7] Florence, Italy 1990-‘94 50-69 35,754 325 47 100 90.9 13.3 22.2 0.30 0.13 (0.10-0.16)
Törnberg et al. [7] Turin, Italy 1992-‘96 50-69b 28,804 248 40 100 86.1 14.0 20.2c 0.35 0.14 (0.10-0.18)
Vettorazzi et al. [8] Veneto Region, Italy 1999-‘02 50-69 94,874d 683 154 73 72.0 16.3 27.8 0.29 0.18 (0.15-0.21)
Törnberg et al. [7] Navarra, Spain 1990-‘96 45-65 40,665 256 29 100 63.0 7.2 16.2 0.22 0.10 (0.07-0.13)

aOnly 367,428 prevalent screens from a total of 467,343 women had 2 years of follow-up.

bAlthough the age group targeted in Turin is 50-69 years, during the period of the study, invitations were restricted to women aged 50-59. A few women had the test shortly after they turned 60.

cBased on the ages 50-64.

dWomen-Years at risk. Follow-up was not complete in the second year of the interval resulting in only 77,979 women-years.