The senior staff members for the systematic review jointly developed the design of the evidence tables. Evidence tables were designed to provide sufficient information to enable readers to understand the study and to determine study quality. In our design, we gave particular emphasis to essential information to answer our KQ s and to determine study quality. The format of the tables, which was based on successful designs used for many prior systematic reviews from this EPC (not just the review of health literacy and outcomes), varied slightly by KQ; the tables for KQ 2 have additional columns that describe the.