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Reliability and validity of the SmartDiet Canadian version questionnaire
Linda Wiens1, Michael Schulzer, Charlene Chen
1Centre for Cardiovascular Health, Gordon and Leslie Diamond Health Care Centre, Vancouver General Hospital, Vancouver, BC, Canada. Linda.Wiens@vch.ca
Journal of the American Dietetic Association
|January 28, 2010
Summary
The SmartDiet Canadian Version questionnaire reliably and accurately measures daily fiber and fat intake in cardiac rehabilitation patients, aiding nutrition intervention assessments.
Area of Science:
- Nutrition Science
- Health Promotion
- Clinical Assessment
Background:
- Nutrition screening tools are vital for health promotion but often lack quantitative scoring.
- Existing tools may not adequately measure dietary patterns or intervention outcomes.
- Developing reliable and valid tools is crucial for effective nutrition interventions.
Purpose of the Study:
- To develop and assess the reliability and validity of the SmartDiet Canadian Version questionnaire.
- To evaluate the questionnaire's suitability for measuring fiber and fat intake.
- To provide a quantitative tool for nutrition assessment in specific populations.
Main Methods:
- The SmartDiet Canadian Version questionnaire was adapted from a Norwegian model.
- Test-retest reliability was assessed using intraclass correlation coefficients (ICC) over 1 month.
- Validity was determined by correlating questionnaire scores with a 3-day food diary using Spearman correlation.
Main Results:
- Fiber intake scores showed good test-retest reliability (ICC = 0.66).
- Fat intake scores demonstrated good test-retest reliability (ICC = 0.74).
- Both fiber (Spearman rho = 0.53, P<0.001) and fat (Spearman rho = 0.48, P<0.001) scores were significantly correlated with food diary data.
Conclusions:
- The SmartDiet Canadian Version questionnaire is a reliable and valid instrument.
- It accurately assesses daily fiber and fat intake in cardiac rehabilitation clients.
- This tool can enhance the measurement of nutrition intervention outcomes in this population.
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