Data compiling, processing and analyzing in the field of hospital services for business purposes, namely, providing aggregate data for complete and longitudinal patient panel profiles, providing historical utilization experience for targeted populations of patients, generating benchmarks and quality and efficiency measures, calculating patient readmission rates and probabilities of readmission, and identifying practices associated with significant variation in quality and efficiency; Compiling and analyzing statistics, data and other sources of information from healthcare organizations for business purposes, namely, providing aggregate data for complete and longitudinal patient panel profiles, providing historical utilization experience for targeted populations of patients, generating benchmarks and quality and efficiency measures, calculating patient readmission rates and probabilities of readmission, and identifying practices associated with significant variation in quality and efficiency; Providing information services relating to business matters for healthcare providers, namely, providing aggregate data for complete and longitudinal patient panel profiles, providing historical utilization experience for targeted populations of patients, generating benchmarks and quality and efficiency measures, calculating patient readmission rates and probabilities of readmission, and identifying practices associated with significant variation in quality and efficiency; Business research and data analysis for healthcare providers and healthcare organizations, namely, providing aggregate data for complete and longitudinal patient panel profiles, providing historical utilization experience for targeted populations of patients, generating benchmarks and quality and efficiency measures, calculating patient readmission rates and probabilities of readmission, and identifying practices associated with significant variation in quality and efficiency