The Reliability and Validity of the Perceived Dietary Adherence Questionnaire for People with Type 2 Diabetes

Nutrients. 2015 Jul 7;7(7):5484-96. doi: 10.3390/nu7075231.

Abstract

Nutrition therapy is essential for diabetes treatment, and assessment of dietary intake can be time consuming. The purpose of this study was to develop a reliable and valid instrument to measure diabetic patients' adherence to Canadian diabetes nutrition recommendations. Specific information derived from three, repeated 24-h dietary recalls of 64 type 2 diabetic patients, aged 59.2 ± 9.7 years, was correlated with a total score and individual items of the Perceived Dietary Adherence Questionnaire (PDAQ). Test-retest reliability was completed by 27 type 2 diabetic patients, aged 62.8 ± 8.4 years. The correlation coefficients for PDAQ items versus 24-h recalls ranged from 0.46 to 0.11. The intra-class correlation (0.78) was acceptable, indicating good reliability. The results suggest that PDAQ is a valid and reliable measure of diabetes nutrition recommendations. Because it is quick to administer and score, it may be useful as a screening tool in research and as a clinical tool to monitor dietary adherence.

Keywords: dietary guidelines; nutritional assessment; type 2 diabetes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Diabetes Mellitus, Type 2 / diet therapy*
  • Diet, Diabetic*
  • Female
  • Humans
  • Male
  • Middle Aged
  • Patient Compliance / statistics & numerical data*
  • Reproducibility of Results
  • Socioeconomic Factors
  • Surveys and Questionnaires