Class of Recommendation comparison between 2010 Guidelines and 2015 Guidelines Update

This color-coded bar graph shows a Class of Recommendation comparison between 2010 Guidelines and the 2015 Guidelines Update. Both the 2010 Guidelines and the 2015 Guidelines Update used the AHA Classification system that includes three main classes of positive recommendations: Class One, Class Two A, and Class Two B. The past AHA format for Class of Recommendation contained only 1 negative classification: Class Three. In the 2015 Guidelines Update, there are two types of Class Three recommendations: Class Three: No Benefit and Class Three: Harm. This bar chart looks at all of these classes. The number and percent of 2010 Guidelines recommendations falling within each class are depicted with a blue bar, while the number and percent of 2015 Guidelines recommendations for each class are depicted with an orange bar. There were a total of 686 2015 Guidelines recommendations and 315 2015 Guidelines Update recommendations. 162 (or 23.6%) of the 2010 Guidelines recommendations fell under Class One as compared to 78 (or 25%) of the 2015 Guidelines Update recommendations. 196 (or 28.6%) of the 2010 Guidelines recommendations fell under Class Two A as compared to 73 (or 23%) of the 2015 Guidelines Update recommendations. 265 (or 38.6%) of the 2010 Guidelines recommendations fell under Class Two B as compared to 144 (or 45%) of the 2015 Guidelines Update recommendations. 63 (or 9.2%) of the 2010 Guidelines recommendations fell under Class Three (the category that was replaced in 2015 with Class Three: No Benefit and Class Three: Harm). 5 (or 2%) of the 2015 Guidelines Update recommendations fell under Class Three: No Benefit. 15 (or 5%) of the 2015 Guidelines Update recommendations fell under Class Three: Harm. This figure is copyright 2015 by the American Heart Association. There is a caption beneath this Figure which reads: “Class of Recommendation comparison between 2010 Guidelines and 2015 Guidelines Update.”