The purpose of these performance measures is to improve the quality of care for patients with ICH by providing hospitals, stroke teams, and regulatory bodies with a way to directly measure and potentially benchmark this quality of care. The writing group, through its internal discussions and deliberations, understands that many domains of care important to the patient with ICH are not represented specifically by a performance measure because of the lack of AHA/ASA Class I or Class III rec- ommendations for a specific aspect of treatment. However, concordance with current guideline-recommended care is strongly encouraged even in the absence of a specific perfor- mance measure linked to all aspects of care. It is hoped that this proposed ICH performance measure set will provide an initial toolkit for assessing quality of care and that it will be revised and expanded as evidence-based care for ICH expands. These performance measures are designed for use within hospitals in the United States. They may be useful in other countries as well, either as directly assessed performance mea- sures or as an example by which other countries may assess appropriate ICH performance measures optimized for their own system of care. When adoption outside the United States is considered, it is appropriate to consider the relevance of the specific aspects of each performance measure to local context and modify if needed.21 In addition, these performance mea- sures are intended to complement similar existing efforts by other organizations and regulatory bodies in the United States given that the overall goals of improving ICH quality of care and being able to measure this quality are similar across groups. This is why significant effort was made to harmonize these performance measures with other existing measures, espe- cially when these earlier measures had been endorsed by the NQF. 