“…Many factors have been shown to affect participation in the initial FIT test, follow-up colonoscopy, and continuous participation in organized CRC screening programs ( Wools et al, 2016 , Portillo et al, 2018 , Unanue-Arza et al, 2021 ). Men and younger people have frequently been reported to have lower participation rates ( Njor et al, 2018 , Pallesen et al, 2021 , Jäntti et al, 2021 , Solís-Ibinagagoitia et al, 2020 , Artama et al, 2016 , Blom et al, 2014 , Gale et al, 2015 , Navarro et al, 2017 , Clarke et al, 2016 ), whereas older age is a barrier to follow-up colonoscopy ( Thomsen et al, 2018 , Deding et al, 2019 , Hoeck et al, 2020 ). Comorbidity and low socio-economic status are also commonly described as barriers to participation in the CRC screening program ( Pallesen et al, 2021 , Thomsen et al, 2018 , Deding et al, 2019 , Deding et al, 2017 , de Klerk et al, 2018 , Kearns et al, 2018 , Bhatia et al, 2021 ).…”