Exhibit 6. Strength of Evidence for Individual Characteristics of Target Audiences Guide to Patient and Family Engagement: Environmental Scan Report Type of DocumentNumberSystematic reviewsSystematic review of randomized controlled trials0Systematic review of descriptive studies (quantitative / qualitative)10Single evaluative studiesRandomized controlled trial0Nonrandomized controlled trial0Cohort / case-control study1Single site intervention (pre/post) / Case series study2Single descriptive studiesMixed methods study (qualitative / quantitative)9Quantitative study20Descriptive or qualitative study26Case study / description of implementation10Scholarly articles or reviews17Other (workshop overview, conference paper)4Return to Document Current as of May 2012 Internet Citation: Exhibit 6. Strength of Evidence for Individual Characteristics of Target Audiences: Guide to Patient and Family Engagement: Environmental Scan Report. May 2012. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/research/findings/final-reports/ptfamilyscan/ptfamilyex6.html