February 25, 2014:722 45 ACC/AHA/SCAI/AMA-PCPI/NCQA Any writing committee member who develops new RWI during his or her tenure on the writing committee is required to notify staff in writing. These statements are reviewed periodically by the Task Force and by members of the writing committee. Author and peer reviewer RWI relevant to the document are included in the appendices: Please see Appendix A for relevant writing committee RWI and Appendix B for relevant peer reviewer RWI. Additionally, to ensure complete transparency, the writing committee members comprehensive disclosure information, including RWI not relevant to the present document, is available on- line at http://jaccjacc.cardiosource.com/DataSupp/ACCF/ 2013_Comprehensive_RWI_WC.pdf. Disclosure infor- mation for the Task Force is also available online at http:// www.cardiosource.org/ACC/About-ACC/Who-We-Are/ Leadership/Guidelines-and-Documents-Task-Forces.aspx. The work of the writing committee was supported exclusively by the ACC, the AHA, and the AMA, without commercial support. Members of the writing committee volunteered their time for this effort. Meetings of the writing committee were con dential and attended only by committee members and staff from the ACC, AHA, SCAI, AMA-PCPI, and NCQA. The development of performance measurement systems involves identi cation of a set of measures targeting a speci c patient population observed over a particular time period. To achieve this goal, the ACC/AHA Task Force on Performance Measures has outlined a set of mandatory sequential steps (1). The following sections outline how these steps were applied by the present writing committee. 2.1. Identifying Clinically Important Outcomes To guide the selection of measures for inclusion in the measure set, the writing committee sought to identify structures, processes, and outcomes that are most mean- ingful to patients undergoing PCI, as recommended by recent guidelines and appropriate use criteria (AUC). A key aspect was to determine outcomes that are most rele- vant for patients. 