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Effect of information about the benefits and harms of mammography on women's decision making: the InforMa randomised controlled trial

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dc.contributor.author Sala Serra, Maria
dc.contributor.author Pérez-Lacasta, Maria José
dc.contributor.author Martínez-Alonso, Montserrat
dc.contributor.author García, Montse
dc.contributor.author Sala Serra, Maria
dc.contributor.author Perestelo-Pérez, Lilisbeth
dc.contributor.author Vidal, Carmen
dc.contributor.author Codern, Núria
dc.contributor.author Feijoo-Cid, Maria
dc.contributor.author Toledo-Chávarri, Ana
dc.contributor.author Cardona, Àngels
dc.contributor.author Pons, Anna
dc.contributor.author Carles, Misericòrdia
dc.contributor.author Rué, Montserrat
dc.contributor.author InforMa Group
dc.date.accessioned 2020-03-31T08:23:27Z
dc.date.available 2020-03-31T08:23:27Z
dc.date.issued 2019
dc.identifier.citation Pérez-Lacasta MJ, Martínez-Alonso M, Garcia M, Sala M, Perestelo-Pérez L, Vidal C, et al. Effect of information about the benefits and harms of mammography on women's decision making: the InforMa randomised controlled trial. PLoS One. 2019 Mar 26; 14(3):e0214057. DOI: 10.1371/journal.pone.0214057
dc.identifier.issn 1932-6203
dc.identifier.uri http://hdl.handle.net/10230/44123
dc.description.abstract 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.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Public Library of Science (PLoS)
dc.rights © 2019 Pérez-Lacasta et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, https://creativecommons.org/licenses/by/4.0/ which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject.other Mama -- Càncer
dc.subject.other Mama--Radiografia
dc.title Effect of information about the benefits and harms of mammography on women's decision making: the InforMa randomised controlled trial
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.1371/journal.pone.0214057
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/publishedVersion


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