Introduction Patient decision aids (PtDAs) are well-studied tools suitable for use in treatment decisions where more than one option is available, empowering patients to make informed decisions. In 2018, a paper-based PtDA template was developed and introduced in the Region of Southern Denmark. In response to the increasing use of digital health technologies, it was decided to develop an identical digital version of the PtDA. In this study, the conversion of the paper-based to a digital format is presented and its usability is evaluated through alpha and beta testing.

Methods Following a systematic PtDA development process, the conversion included the phases scoping, prototyping, design and testing. An alpha test assessed internal usability, while two beta tests explored the feasibility for breast and colorectal cancer patients before and after a consultation on adjuvent therapy.

Results Seven PtDA experts gave positive feedback on the quality of the digital PtDA in the alpha test. The six patients participating in the pre-consultation beta test were positive about the ease of use of the digital PtDA with a mean score of 81.9 in Preparation for Decision Making on a scale from 0–100, while the post-consultation beta test among ten patients showed an overall mean score of 72.0.

Discussion The conversion involved several iterative design processes, but it showed potential for high adoption and uptake due to its convenience and accessibility before and after the consultation.

Conclusion The digital PtDA provides a user-friendly solution for patients. The pre-consultation beta test showed higher Preparation for Decision Making than post-consultation. Overall, the conversion of a paper- based PtDA to a digital format proved successful, with promising results from testing. Further research is recommended to test the digital version on a large scale.