Alberta Centre for Health ServicesUtilizationResearch ACKNOWLEDGEMENT The authors gratefully acknowledge the support provided by the Alberta Centre for Health Services Utilization Research, which conducts studies of how health services are used and delivered to inform health policy development and management of health service delivery. [...] The Alberta Centre for Health Services Utilization Research is a joint initiative between the University of Alberta and the University of Calgary, funded by Alberta Health & Wellness. [...] Finally, the following information from this file was used to link all the patient information to the provider information: a unique patient identification number (i.e.: the Anonymous Stakeholder Number (ASN)), the date of the procedure, and a hospital identification number identifying the hospital in which the procedure was performed. [...] The Alberta Centre for Health Services Utilization Research Page 3 Treatment Variations of Hip Fractures in Alberta To contribute to our understanding of the variations in rates, we included some physician characteristics. [...] This information was linked to the patient information via the ASN of the patient, hospital ID number, and date of procedure.