Table 1 Overall screening outcome of women screened between 1997−2006 and 2007−2016.

From: Delayed breast cancer diagnosis after repeated recall at biennial screening mammography: an observational follow-up study from the Netherlands

Screening years

1997−2006

2007−2016

P value

Screens, N

283,479

534,177

 

 First screens, N (%)

39,098 (13.8)

58,443 (10.9)

 

 Subsequent screens, N (%)

244,381 (86.2)

475,734 (89.1)

 

Recall, N (%)

3447 (1.2)

15,145 (2.8)

<0.001

Screen-detected cancers, N

1421

3511

<0.001

Cancer detection ratea

5.0

6.6

<0.001

PPV of recall, %

41.2

23.2

<0.001

Delayed breast cancer diagnosis, N (%)b

32 (2.2)

98 (2.8)

0.29

Delay in months (range)

45.0 (24 – 97)

33.8 (21 – 97)

0.001

  1. PPV positive predictive value.
  2. aPer 1000 screens.
  3. bProportion as the number of diagnostic delays among all screen-detected breast cancers.
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