Influence of Using Different Databases and ‘Look Back’ Intervals to Define Comorbidity Profiles for Patients with Newly Diagnosed Hypertension: Implications for Health Services Researchers

• Guanmin Chen ,

  * E-mail: guchen@ucalgary.ca

  Affiliations Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada, Institute of Public Health, University of Calgary, Calgary, Alberta, Canada, Research Facilitation, Alberta Health Services, Calgary, Alberta, Canada

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• Lisa Lix,

  Affiliation Department of Community Health Sciences, University of Manitoba, Manitoba, Canada

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• Karen Tu,

  Affiliation Department of Family and Community Medicine, University of Toronto/Institute for Clinical Evaluative Sciences (ICES), Toronto, Ontario, Canada

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• Brenda R. Hemmelgarn,

  Affiliations Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada, Institute of Public Health, University of Calgary, Calgary, Alberta, Canada, Department of Medicine, University of Calgary, Calgary, Alberta, Canada

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• Norm R. C. Campbell,

  Affiliations Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada, Department of Medicine, University of Calgary, Calgary, Alberta, Canada, Department of Pharmacology and Therapeutics, University of Calgary, Calgary, Alberta, Canada

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• Finlay A. McAlister,

  Affiliation Division of General Internal Medicine, University of Alberta, Edmonton, Ontario, Canada

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• Hude Quan,

  Affiliations Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada, Institute of Public Health, University of Calgary, Calgary, Alberta, Canada

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• Hypertension Outcome and Surveillance Team

  ¶Complete membership of author group can be found in the Acknowledgments.

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