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Weighing the evidence: the Canadian experience

R B Goldbloom¹

¹Department of Pediatrics, Dalhousie University, Halifax, Canada.

The American Journal of Clinical Nutrition

|February 1, 1997

Summary

The Canadian Task Force on the Periodic Health Examination developed a robust evidence hierarchy. This methodology, used for 18 years, may be applicable to studying dietary sodium and health prevention.

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Area of Science:

Preventive medicine
Health services research

Background:

The Canadian Task Force on the Periodic Health Examination has utilized an evidence hierarchy for 18 years.
This hierarchy aids in evaluating scientific evidence for condition preventability.

Purpose of the Study:

To describe the history and operational methods of the Canadian Task Force on the Periodic Health Examination.
To explore the potential applicability of the task force's methodology to the study of dietary sodium and health.

Main Methods:

Historical review of the Canadian Task Force on the Periodic Health Examination.
Description of the established hierarchy of evidence and its application.
Discussion of the task force's modus operandi.

Main Results:

The task force has a long-standing methodology for evidence evaluation.
The developed methodology is potentially transferable to other health research areas.

Conclusions:

The Canadian Task Force's evidence hierarchy is a well-established tool.
The methodology holds promise for investigating preventive aspects of dietary sodium intake and overall health.

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