The findings of the ERC and the writing com- mittee members were formally presented and discussed, then guideline recommendations were developed. The Systematic Review for the 2017 AHA/ACC/HRS Guide- line for Management of Patients With Ventricular Ar- rhythmias and the Prevention of Sudden Cardiac Death is published in conjunction with this guideline.S1.4-1 The ACC and AHA have acknowledged the impor- tance of value in health care and have called for even- tual development of a Level of Value for clinical practice Available cost-effectiveness data were determined to be sufficient to support 2 specific CLINICAL STATEMENTS AND GUIDELINES recommendations in this guideline (see Sections 7.1.1 and 7.1.2). As a result, a Level of Value was assigned to those 2 recommendations on the basis of the ACC/ AHA Statement on Cost/Value Methodology in Clini- cal Practice Guidelines and Performance Measures, as shown in Table 3.S1.4-2 Available quality of life (QoL) data were deemed to be insufficient to support specific rec- ommendations in this guideline. 1.2. Organization of the Writing Committee The writing committee consisted of cardiac electro- physiologists (including those specialized in pediatrics), general adult and pediatric cardiologists (including those specialized in critical care and acute coronary syndromes [ACS], genetic cardiology, heart failure, and cost-effectiveness analyses), a geriatrician with exper- tise in terminal care and shared decision-making, and a lay representative, in addition to representatives from the ACC, AHA, HRS, and the Heart Failure Society of America (HFSA). 1.3. Document Review and Approval This document was reviewed by 2 official reviewers nominated by the ACC, AHA, and HRS; 1 official lay re- Table 1. 