General principles for evidence maps (from p. 32 in first paper listed below)
Clearly determine the intended purpose of the planned evidence map, including the type of
evidence to be included (e.g. effectiveness) and the planned structure of the map
Define the scope of the map, which should be stated as a clear title
Have an ex ante search strategy and coding form (which should include stakeholder
engagement in defining the map framework and then be piloted)
Include on-going studies in the map by searching registries for primary studies and reviews
Include critical appraisal of the quality of evidence
Have a visual representation in at least two dimensions, with possible additional
dimensions or filters
Be accompanied by a descriptive report.
1. Saran, A., & White, H. (2018). Evidence and gap maps: A comparison of different approaches. Campbell Systematic Reviews, 14(1), 1–38. https://doi.org/10.4073/cmdp.2018.2 PDF: https://onlinelibrary.wiley.com/doi/pdf/10.4073/cmdp.2018.2
2. Snilstveit, B., Vojtkova, M., Bhavsar, A., Stevenson, J., & Gaarder, M. (2016). Evidence & Gap Maps: A tool for promoting evidence informed policy and strategic research agendas. Journal of Clinical Epidemiology, 79, 120–129. https://doi.org/10.1016/j.jclinepi.2016.05.015
Hempel, S, Taylor, SL, Marshall, NJ, Miake-Lye, IM, Beroes, J M, Shanman, R, Solloway, MR, Shekelle, PG. Evidence Map of Mindfulness. VA-ESP Project #05-226; 2014
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