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Table 1 Overview of performance indicators in screening mammography in Denmark 2008–2015

From: Outcome of breast cancer screening in Denmark

Performance indicator Invitation round
First 2008–2009% Second 2010–2011% Third 2012–2013% Fourth 2014–2015%
Coverage of examination 75.4 (75.3–75.5) 75.0 (74.8–75.1) 76.7 (76.6–76.8) 76.4 (76.3–76.5)
Participation after invitation 76.4 (76.3–76.5) 81.8 (81.7–81.9) 84.3 (84.3–84.4) 82.1 (82.0–82.2)
Detection rate 0.93 (0.91–0.96) 0.62 (0.60–0.64) 0.67 (0.65–0.69) 0.61 (0.59–0.64)
False-positive rate 2.04 (2.00–2.08) 2.08 (2.04–2.12) 2.07 (2.03–2.11) 1.88 (1.84–1.92)
Invasive 87.5 (86.5–88.4) 86.3 (85.0–87.5) 86.4 (85.2–87.4) 85.8 (84.5–86.9)
DCIS 12.6 (11.6–13.5) 13.7 (12.5–15.0) 13.6 (12.6–14.8) 14.2 (13.1–15.5)
Lymph node neg 69.8 (68.4–71.2) 74.5 (72.8–76.2) 78.2 (76.7–79.6) 80.4 (78.8–81.8)
Small tumor 36.1 (34.4–37.8) 40.1 (38.2–42.1) 39.8 (38.0–41.5) 40.1 (38.3–42.0)
Interval cancer rate 17.9 (16.9–19.1) 28.9 (27.3–30.5) 26.3 (24.9–27.8) NA
Sensitivity 82.1 (81.1–83.1) 71.2 (69.8–72.5) 73.7 (72.5–74.8) NA
Specificity 97.9 (97.9–98.0) 97.9 (97.9–97.9) 97.9 (97.9–98.0) NA
  1. Notes:
  2. NA not available
  3. Percent and 95% confidence intervals