Background The Norwegian colorectal cancer (CRC) screening program started in May 2022. Inequalities in CRC screening participation are a challenge, and we expect that certain groups, such as immigrants, are at risk of nonparticipation. Prior to the start of the national screening program, a pilot study showed lower participation rates in CRC screening among immigrants from Pakistan. These immigrants ...

Importance - Early breast cancer detection is associated with lower morbidity and mortality.<p> <p>Objective - To examine whether a commercial artificial intelligence (AI) algorithm for breast cancer detection could estimate the development of future cancer.<p> <p>Design, Setting, and Participants - This retrospective cohort study of 116 495 women aged 50 to 69 years with no prior history of ...

Objectives To compare results of selected performance measures in mammographic screening for an artifcial intelligence (AI) system versus independent double reading by radiologists.<p> <p>Methods In this retrospective study, we analyzed data from 949 screen-detected breast cancers, 305 interval cancers, and 13,646 negative examinations performed in BreastScreen Norway during the period from 2010 ...

Age at menopause varies considerably among women and is linked to health after menopause. Body mass index is associated with age at natural menopause, but the influence of weight change remains unclear. Thus, we studied associations of adolescent to midlife weight change with age at natural menopause. We performed a retrospective population-based cohort study of 263,586 women aged 50-69 years attending ...

Introduction - We have previously shown that immigrants have lower attendance in BreastScreen Norway than non-immigrants and that non-Western immigrants have lower incidence of breast cancer, but more advanced disease.<p> <p>Purpose - To compare breast cancer-specific survival for immigrants versus non-immigrants diagnosed with screen-detected or symptomatic breast cancer.<p> <p>Material and ...

Background Although several studies from Europe and the US have shown promising screening results favoring digital breast tomosynthesis compared with standard digital mammography (DM), both costs and efects of implementing tomosynthesis in routine screening programs remain uncertain. The cost efectiveness of using tomosynthesis in routine screening is debated in the literature, and model inputs ...

Objectives - The randomized controlled trial comparing digital breast tomosynthesis and synthetic 2D mammograms (DBT + SM) versus digital mammography (DM) (the To-Be 1 trial), 2016–2017, did not result in higher cancer detection for DBT + SM. We aimed to determine if negative cases prior to interval and consecutive screen-detected cancers from DBT + SM were due to interpretive error.<p> <p>Methods ...

Irregular attendance in breast cancer screening has been associated with higher breast cancer mortality compared to regular attendance. Early performance measures of a screening program following regular versus irregular screening attendance have been less studied. We aimed to investigate early performance measures following regular versus irregular screening attendance. Methods We used information ...

Purpose: To describe and compare early screening outcomes before, during and after a randomized controlled trial with digital breast tomosynthesis (DBT) including synthetic 2D mammography versus standard digital mammography (DM) (To-Be 1) and a follow-up cohort study using DBT (To-Be 2). <p><p>Methods: Retrospective results of 125,020 screening examinations from four consecutive screening rounds ...

Introduction - Experience of pain during screening mammography is shown to affect further attendance negatively. We aimed to explore the experience of pain during screening mammography using three different breast compression paddles.<p> <p>Methods - Using a self-report questionnaire, we collected information on pain experienced during mammography from 938 women screened in Bodø at Nordland ...