To compare one view (oblique) and two view (oblique and craniocaudal) mammography in breast cancer screening.
Setting-Nine breast screening centres in England.
Subjects-40 163 women aged 50-64 attending their first breast screening examination.
Interventions-Women were randomised to have one view mammography, two view mammography, or two view mammography in which one view was read by one reader and both views were read by another.
Main outcome measures-Prevalence of cancer detected, recall rates, cost per cancer detected, and marginal cost per extra cancer detected.
Two view mammography detected 24% more women with breast cancer (95% confidence interval 16% to 31%) than one view mammography.
Prevalence of detected cancer was 6.84 with two view mammography and 5.52 per 1000 women with one view.
The proportion of women recalled for assessment was 15% lower (95% confidence interval 6% to 23%) with two view (6.97%) than with one view (8.16%) mammography.
The cost of two view screening was higher (£26.46 compared with £22.00 per examination) but the average cost per cancer detected was similar (£5330 compared with £5310) and the marginal cost per extra cancer detected with two views was similar to the average cost (£5400).
Conclusion-Two view mammography is medically more effective than one view ; it detects more cancers and reduces recall rates ; it is also similarly cost effective financially.
Mots-clés Pascal : Glande mammaire pathologie, Tumeur maligne, Dépistage, Homme, Femelle, Etude comparative, Glande mammaire, Axe, Coût, Angleterre, Grande Bretagne, Royaume Uni, Europe
Mots-clés Pascal anglais : Mammary gland diseases, Malignant tumor, Medical screening, Human, Female, Comparative study, Mammary gland, Axis, Costs, England, Great Britain, United Kingdom, Europe
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0000507
Code Inist : 002B20E02. Création : 01/03/1996.