“…Even in America, which does not have a universal coverage, various algorithms have been used to validate the usage of claims data (Nattinger. et al, 2004;Penberthy et al, 2005;Miller et al, 2009;Riley, 2009). For example, Medicare claims records, the Surveillance, Epidemiology, and End Results (SEER) Program, and clinical operative reports were compared to classify kidney cancer surgeries (Miller et al, 2009).…”