Related Experiment Video
Updated: Oct 10, 2025
In Vivo and Ex Vivo Approaches to Study Ovarian Cancer Metastatic Colonization of Milky Spot Structures in Peritoneal Adipose
Published on: October 14, 2015
Women's conceptual knowledge about breast cancer screening and overdiagnosis in Norway: a cross-sectional study
Kaitlyn M Tsuruda1,2, Marit B Veierød2, Nehmat Houssami3
1Department of Breast Cancer Screening, Cancer Registry of Norway, Oslo, Norway.
Objective:
To investigate conceptual knowledge about mammographic screening among Norwegian women.
Design:
We administered a cross-sectional, web-based survey. We used multiple-choice questions and a grading rubric published by a research group from Australia.
Setting:
Our Norwegian-language survey was open from April to June 2020 and targeted women aged 45-74 years.
Participants:
2033 women completed our questionnaire. We excluded 13 women outside the target age range and 128 women with incomplete data. Responses from 1892 women were included in the final study sample.
Primary And Secondary Outcome Measures:
The questionnaire focused on women's knowledge about the breast cancer mortality reduction, false positive results and overdiagnosis associated with mammographic screening. The primary outcome was the mean number of marks assigned in each of the three themes and overall. There were three potential marks for questions about breast cancer mortality, one for false positives and six for overdiagnosis.
Results:
Most women (91.7%) correctly reported that screened women are less likely to die of breast cancer than non-screened women. 39.7% of women reported having heard of a 'false positive screening result' and 86.2% identified the term's definition; 51.3% of women had heard of 'overdiagnosis' and 14.8% identified the term's definition. The mean score was 2.59 of 3 for questions about breast cancer mortality benefit and 0.93 of 1 for the question about false positive screening results. It was 2.23 of 6 for questions about overdiagnosis.
Conclusions:
Most participants correctly answered questions about the breast cancer mortality benefit and false positive results associated with screening. The proportion of correct responses to questions about overdiagnosis was modest, indicating that conceptual knowledge about overdiagnosis was lower. Qualitative studies that can obtain in-depth information about women's understanding of overdiagnosis may help improve Norwegian-language information about this challenging topic.
Related Concept Videos
01:29Bias in Epidemiological Studies
01:10Documentation of Nursing Diagnosis
In some settings, data-driven computerized decision support systems are in place, allowing for more accurate nursing diagnoses. The database within one of these systems includes diagnostic labels defining characteristics, activities, and indicators for nursing. A nurse enters...
01:21Cancer Survival Analysis
01:25Role of Communication in the Nursing Process I: Assessment and Diagnosis
The nursing process considers the patient's emotional and physical well-being. The process can be repeated or stopped at any point if judged essential. Assessment is the first step in the nursing...
01:23Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast,...