Skip to main content

Table 4 Effect of study group on pathological attributes of interval cancers and second round screen-detected cancers

From: Impact of false-positive mammography on subsequent screening attendance and risk of cancer

  Size (mm) Grade Node status Stage Laterality Tumour risk group
  20+ < 20 Odds ratioa 3 1+2 Odds ratiob +ve -ve Odds ratioc 2+ 1 Odds ratiod Left Right Odds ratioe 3 1 + 2 Odds ratiof
Interval cancer                   
   Nonassessed 160 124 1.00 72 148 1.00 101 133 1.00 179 131 1.00 139 162 1.00 75 216 1.00
   Assessed normal 26 14 1.44 (0.72–2.87) 5 22 0.47 (0.17–1.28) 13 18 0.95 (0.45–2.03) 25 15 1.22 (0.62–2.40) 22 17 1.51 (0.77–2.95) 4 34 0.34 (0.12–0.99)
   Assessed benign 1 1 0.78 (0.05–12.51) 1 0 - 1 2 0.66 (0.06–7.36) 1 2 0.37 (0.03–4.08) 2 2 1.17 (0.16–8.38) 2 2 2.88 (0.40–20.81)
   All assessed 27 15 1.40 (0.71–2.74) 6 22 0.56 (0.22–1.44) 14 20 0.92 (0.44–1.91) 26 17 1.12 (0.58–2.15) 24 19 1.47 (0.77–2.80) 6 36 0.48 (0.19–1.18)
Second screen cancer                   
   Nonassessed 78 275 1.00 57 256 1.00 72 206 1.00 104 253 1.00 180 172 1.00 54 294 1.00
   Assessed normal 11 24 1.62 (0.76–3.44) 5 23 0.98 (0.36–2.68) 10 19 1.51 (0.67–3.39) 13 22 1.44 (0.70–2.96) 16 16 0.96 (0.46–1.97) 4 30 0.73 (0.25–2.14)
   Assessed benign 0 1 - 0 1 - 0 1 - 0 1 - 0 1 - 0 1 -
   All assessed 11 25 1.55 (0.73–3.29) 5 24 0.94 (0.34–2.56) 10 20 1.43 (0.64–3.20) 13 23 1.37 (0.67–2.82) 16 17 0.90 (0.44–1.84) 4 31 0.70 (0.24–2.07)
All cancers                   
   Nonassessed 238 399 1.00 129 404 1.00 173 339 1.00 283 384 1.00 319 334 1.00 129 510 1.00
   Assessed normal 37 38 1.63 (1.01–2.64) 10 45 0.70 (0.34–1.42) 23 37 1.22 (0.70–2.11) 38 37 1.39 (0.86–2.25) 38 33 1.21 (0.74–1.97) 8 64 0.49 (0.23–1.06)
   Assessed benign 1 2 0.84 (0.08–9.29) 1 2 1.57 (0.14–17.41) 1 3 0.65 (0.07–6.33) 1 3 0.45 (0.05–4.37) 2 3 0.70 (0.12–4.21) 2 3 2.64 (0.44–15.94)
   All assessed 38 40 1.59 (0.99–2.55) 11 47 0.73 (0.37–1.46) 24 40 1.18 (0.69–2.01) 39 40 1.32 (0.83–2.11) 40 36 1.16 (0.72–1.87) 10 67 0.59 (0.30–1.18)
  1. a Odds ratio of cancer measuring 20 mm and above versus < 20 mm. b Odds ratio of cancer of grade 3 versus grades 1 or 2. c Odds ratio of node positive cancer versus node negative. d Odds ratio of cancer of stage 2 or above versus stage 1. e Odds ratio of cancer in the left breast versus in the right breast. f Odds ratio of cancer of risk group 3 versus risk groups 1 or 2 [9].