Marie Curie Palliative Care Research Group, Wales Cancer Trials Unit, School of Medicine, Cardiff University, Cardiff, UK.
Patient Educ Couns. 2012 Feb;86(2):179-88. doi: 10.1016/j.pec.2011.04.014. Epub 2011 May 14.
Design and undertake usability and field-testing evaluation of a theory-guided decision aid (BresDex) in supporting women choosing surgery for early breast cancer.
An extended Theory of Planned Behavior (TPB) and the Common Sense Model of Illness Representations (CSM) guided the design of BresDex. BresDex was evaluated and refined across 3 cycles by interviewing 6 women without personal history of breast cancer, 8 women with personal history of breast cancer who had completed treatment and 11 women newly diagnosed with breast cancer. Participants were interviewed for views on content, presentation (usability) and perceived usefulness towards deciding on treatment (utility). Framework analysis was used, guided by the extended TPB and the CSM.
BresDex was positively received in content and presentation (usability). It appeared an effective support to decision-making and useful source for further information, particularly in clarifying attitudes, social norms and perceived behavioral control, and presenting consequences of decisions (utility).
This study illustrates the potential benefit of the extended TPB and CSM in designing a decision aid to support women choosing breast cancer surgery.
BresDex could provide decision-making support and serve as an additional source of information, to complement the care received from the clinical team.
设计并进行一项理论指导的决策辅助工具（BresDex）的可用性和现场测试评估，以支持女性选择早期乳腺癌手术。
扩展的计划行为理论（TPB）和疾病认知模型（CSM）共同指导 BresDex 的设计。通过对 6 名无乳腺癌个人病史的女性、8 名已完成治疗的有乳腺癌个人病史的女性和 11 名新诊断为乳腺癌的女性进行访谈，对 BresDex 进行了 3 个周期的评估和改进。参与者就内容、呈现（可用性）以及对治疗决策（实用性）的感知有用性发表了看法。使用框架分析，以扩展的 TPB 和 CSM 为指导。
BresDex 在内容和呈现（可用性）方面得到了积极的评价。它似乎是决策的有效支持，也是进一步信息的有用来源，特别是在澄清态度、社会规范和感知行为控制，以及呈现决策的后果（实用性）方面。
本研究说明了扩展的 TPB 和 CSM 在设计决策辅助工具以支持女性选择乳腺癌手术方面的潜在益处。
BresDex 可以提供决策支持，并作为临床团队提供的护理的额外信息来源。
