Background and objectives   Health plans in person-centred care improve outcomes in cardiac rehabilitation (1, 2). However, to understand their effectiveness across care sectors, research is needed to describe and evaluate health plans. This study aims to analyse health plans and interview data from the ongoing DINE trial to identify factors that contribute to health plans’ effectiveness in person-centred education on the Nordic diet. Method  Participants must have been part of the DINE trial intervention group (n=27), with documented health plans collected from their medical records.  Health plan data includes:   The plans the participant wishes to achieve.   The participant´s resources or capabilities to achieve these plans.   Support needs, including who provides support, where, and when.    Updates of the health plans during the DINE trial.   A retrospective descriptive review of health plans through content analysis will be conducted. To comprehensively address the research questions, we will cross-verify data from health plans, data from food diaries and food frequency questionnaires, and interviews. This will include information from individual interviews and the development and evaluation of health plans co-created by participants and the dietitian.   Results  This is part of the DINE trial, running from May 2025 to June 2027. The analysis is expected to commence June 2027.   Conclusion  The intention is to improve the implementation of health plans across the healthcare sector by analysing documented plans, evaluating their alignment with stated goals, and exploring the narratives and partnerships that supported their success.  References Fors A, et al. Person-centred care after acute coronary syndrome, from hospital to primary care - A randomised controlled trial. Int J Cardiol. 2015 Fors A, et al. Effectiveness of person-centred care after acute coronary syndrome in relation to educational level: Subgroup analysis of a two-armed randomised controlled trial. Int J Cardiol. 2016