A living guideline uses the results of a living systematic review and determines whether new guidelines recommendations are needed or whether modifications are needed to existing guideline recommendations as new evidence emerges. Source: Akl, E. A., Meerpohl, J. J., Elliott, J., Kahale, L. A., Schünemann, H. J., Agoritsas, T., ... & Pearson, L. (2017). Living systematic reviews: 4. Living guideline recommendations. Journal of Clinical Epidemiology, 91, 47-53.
A living systematic review uses the same processes as other systematic reviews but is continually updated, based on frequent searches of the literature, with incorporation of relevant new evidence as it becomes available. Cochrane Community (n.d.) Living systematic reviews. Retrieved April 9, 2020 from https://community.cochrane.org/review-production/production-resources/living-systematic-reviews.
A logic model is a graphic depiction (road map) that represents the shared relationships among the resources, activities, outputs, outcomes, and impact for the evaluation of a proposed guideline. This visual framework shows the critical logical premises and presumed relationships among intermediate, surrogate, and ultimate health outcomes related to a specified clinical question. Source: Woolf, S., Schünemann, H. J., Eccles, M. P., Grimshaw, J. M., & Shekelle, P. (2012). Developing clinical practice guidelines: types of evidence and outcomes; values and economics, synthesis, grading, and presentation and deriving recommendations. Implementation Science, 7(1), 1-12. https://doi.org/10.1186/1748-5908-7-61