Access National Quality Measures Clearinghouse NQMC is a public resource for evidence-based quality measures and measure sets. Continue to the National Quality Measures Clearinghouse site. Current as of February 2013 Internet Citation: Access National Quality Measures Clearinghouse. February 2013. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/redirects/Third-levelDomainRedirects/NQMC-Redirect.html