Effect of information about the benefits and harms of mammography on women's decision making : The InforMa randomised controlled trial
Pérez-Lacasta, María José (Universitat Rovira i Virgili)
Martínez-Alonso, Montserrat (Institut de Recerca Biomèdica de Lleida Fundació Dr. Pifarré)
Garcia, Montse (Institut d'Investigació Biomèdica de Bellvitge)
Sala, Maria (Institut Hospital del Mar d'Investigacions Mèdiques)
Perestelo-Pérez, Lilisbeth (Servicio de Evaluación del Servicio Canario de la Salud)
Vidal, Carmen (Institut d'Investigació Biomèdica de Bellvitge)
Codern-Bové, Núria (Escola Universitària d'Infermeria i Teràpia Ocupacional de Terrassa)
Feijoo Cid, Maria (Universitat Autònoma de Barcelona. Departament d'Infermeria)
Toledo-Chávarri, Ana (Fundación Canaria de Investigación Sanitaria)
Cardona i Cardona, Àngels (ÀreaQ, Barcelona)
Pons, Anna (Institut Català de la Salut)
Carles-Lavila, Misericòrdia (Universitat Rovira i Virgili)
Rue, Montserrat (Institut de Recerca Biomèdica de Lleida Fundació Dr. Pifarré)

Fecha:	2019
Resumen:	Background In Spain, women invited to breast screening are not usually informed about potential harms of screening. The objective of the InforMa study is to assess the effect of receiving information about the benefits and harms of breast screening on informed choice and other decision-making outcomes, in women approaching the age of invitation to mammography screening. Methods Two-stage randomised controlled trial. In the first stage, 40 elementary territorial units of the public healthcare system were selected and randomised to intervention or control. In the second stage, women aged 49-50 years were randomly selected. The target sample size was 400 women. Women in the intervention arm received a decision aid (DA) with detailed information on the benefits and harms of screening. Women in the control arm received a standard leaflet that did not mention harms and recommended accepting the invitation to participate in the Breast Cancer Screening Program (BCSP). The primary outcome was informed choice, defined as adequate knowledge and intentions consistent with attitudes. Secondary outcomes included decisional conflict, worry about breast cancer, time perspective, opinions about the DA or the leaflet, and participation in the BCSP. Results In the intervention group, 23. 2% of 203 women made an informed choice compared to only 0. 5% of 197 women in the control group (p < 0. 001). Attitudes and intentions were similar in both study groups with a high frequency of women intending to be screened, 82. 8% vs 82. 2% (p = 0. 893). Decisional conflict was significantly lower in the intervention group. No differences were observed in confidence in the decision, anxiety, and participation in BCSP. Conclusions Women in Spain lack knowledge on the benefits and harms of breast screening. Providing quantitative information on benefits and harms has produced a considerable increase in knowledge and informed choice, with a high acceptance of the informative materials.
Ayudas:	Instituto de Salud Carlos III PI14-00113
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Breast Neoplasms ; Choice Behavior ; Decision Making ; Decision Support Techniques ; Early Detection of Cancer ; Female ; Health Knowledge, Attitudes, Practice ; Humans ; Mammography ; Mass Screening ; Middle Aged ; Outcome Assessment, Health Care ; Patient Participation ; Risk Assessment ; Spain
Publicado en:	PloS one, Vol. 14 Núm. 3 (march 2019) , p. e0214057, ISSN 1932-6203

DOI: 10.1371/journal.pone.0214057
PMID: 30913217

20 p, 932.6 KB

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