Table 1

Main characteristics of the screening results, overall and by screening round

Invited (n)526 644178 828107 25383 81366 86253 12436 764
Screened (n)441 647123 34796 12978 77063 06950 44129 891
Participation rate (%)83.969.089.694.094.394.981.3
Gender (% of males screened)46.647.746.746.345.845.645.5<0.0001
Age (mean)<0.0001
FIT positive (n)18 179701534332624211218561139
Crude FIT positivity (%)<0.0001
Compliance with colonoscopy (n)16 954641932272485200417511068
Compliance with colonoscopy (%)93.391.594.094.794.994.393.8<0.0001
Lesions diagnosed (n)
 Colorectal cancer78141216275614625
 Advanced adenoma47131958813647540457298
 Non-advanced adenoma2844919560475348343199
Crude detection rate (×1000 subjects screened) for:
 Colorectal cancer1.773.341.690.950.970.910.84<0.0001
 Advanced adenoma10.715.<0.0001
 Non-advanced adenoma6.<0.0001
Crude PPV on colonoscopy for advanced neoplasia (%)32.436.930.<0.0001
Number needed to screen to detect one case of advanced neoplasia80.452.098.6109.1104.9100.392.5<0.0001
Number needed to scope to detect one case of advanced neoplasia3.<0.0001
  • Advanced neoplasia: colorectal cancer or advanced adenoma.

  • *Comparison of screening rounds using Pearson’s χ2 test and Snedecor’s F for homogeneity of proportions, as appropriate.

  • FIT, faecal immunochemical test; PPV, positive predictive value.