Abstract: A rules based software user interface application and environment, comprising: a) a clinical quality measure library database schema, b) a clinical quality measure specification database schema, c) a rules library, d) a clinical business rule (CBR) editor, e) a key performance indicator (KPI) or clinical quality measure specification editor, f) a clinical quality runtime configuration module, g) a cost of care runtime configuration module and h) a runtime manager module and, in some embodiments, i) a measure testing module. In some embodiments, rules-based software applications comprise a component for delivery of clinical measure description libraries as a web or Internet application. In other embodiments, rules-based software applications comprise a component for measure testing which include a test data generator module which generates a test database with a known target measure result and an audit detail component for inspecting test results.