Table 1.

Characteristics of the included clinical practice guidelines

Clinical Practice Guideline	Year of Publication	Geographical Region	References per Guideline	RCTs per Guideline	RCTs as a Proportion of All Studies Cited by CPGs
Surgical management of osteoarthritis of the knee	2015	United States	220	162	73.64%
Treatment of osteoarthritis of the knee	2013	United States	223	193	86.55%
Date range	2013 to 2015	Totals	443	355	80.1%

CPGs, clinical practice guidelines; RCTs, randomized controlled trials.