RESUMO
Development of an evaluation system for online self-help groups by using the example of German-speaking cancer forums Objectives: This paper pursues the question how the quality of forums can be evaluated. Therefor a grading system was designed and 23 German-speaking cancer forums were evaluated by content and formal criteria Methods: Using a keyword-based internet search, 23 forums were identified. Data was gathered about: number of themes, posts and members, structure, key subjects and type of financing. Furthermore, an evaluation system was developed, with which the forums where assessed. Results: The forums were divided in forums with (n = 10) and without (n = 9) focus on a type of cancer. Four are health portals with forum-function. The quality of online cancer forums is heterogeneous, the evaluation resulted an average quality index of 2.7 for the total cancer forums Conclusion: A good information editing, moderation, data protection and transparency are important quality criteria. The evaluation of forums may help the patients, to autonomously value the quality of the presented information.