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Table 6 Statistical summary of 19 previously published reviews of peer support for which it was possible to abstract percentages of studies reporting effect in specific categories of application of peer support

From: Peer support of complex health behaviors in prevention and disease management with special reference to diabetes: systematic reviews

    Lowest, highest, and median %s of studies identified as reporting effects in specific categories of application
First author # studies Year Lowest Highest Median
Ingram 11 2010 25 100 67
Ayala 17 2010 50 91 83
Repper 40 2011 40 89 64.5
Kenya 16 2011 44 81 62.5
Hunt 16 2011 80 100 90
Chapman 26 2010 0 75 37.5
Gugliani 23 2011 0 100 67
Lewin 82 2010 0 70 33
Pfeiffer 7 2010 0 71 35.5
Viswanathan 53 2010 14 67 29
Dale 7 2008 0 100 40
Hoey 43 2008 38 50 44
Brownstein 14 2007 90 100 90
Gibbons 12 2007 60 100 75
Norris 18 2006 36 75 50
van Dam 6 2005 40 100 73.5
Andrews 24 2004 67 100 78
Eysenbach 38 2004 50 67 58.5
Swider 20 2002 50 83 75
Means    36 85.2 60.7
Medians    40 89 64.5