Inclusion criteria | |
---|---|
 BCSN | Aged 50–74 years old in 2012 |
 | Resident in selected municipalities in South-East Norway (Østfold, parts of Akershus and parts of Buskerud) |
 CRCbiome | FIT positive test (i.e. hemoglobin > 15 mcg/g feces) and invited to a follow-up colonoscopy |
Exclusion criteria | |
 BCSNa | Death |
 | Moving out of the area |
 | Reaching the upper age limit |
 | Diagnosed with CRC |
 CRCbiome | Not attending screening colonoscopy |
 | Low DNA concentration |
 | Low sequencing yield (< 2 gigabases) |