Development and validation of a short, consumer-oriented nutrition knowledge questionnaire.

Area of Science:

• Nutrition Science
• Consumer Health Education

Background:

• Assessing consumer nutrition knowledge is crucial for effective public health interventions.
• Existing tools may not adequately capture the nuances of dietary understanding among the general population.

Purpose of the Study:

• To develop and validate a concise scale for measuring consumer nutrition knowledge.
• To identify the extent of nutrition knowledge gaps in consumers.
• To explore the relationship between nutrition knowledge and self-reported food choices.

Main Methods:

• Development of 64 nutrition knowledge items based on consumer interviews and expert recommendations.
• Administration of a postal survey to a random sample of 1043 consumers (37% response rate).
• Validation of a final 20-item scale using reliability and validity analyses, and correlation with food consumption data.

Main Results:

• A validated 20-item nutrition knowledge scale with acceptable psychometric properties was developed.
• The scale revealed widespread nutrition knowledge gaps among consumers.
• A limited correlation was observed between nutrition knowledge scores and self-reported food consumption frequencies.

Conclusions:

• The developed scale provides a reliable measure of consumer nutrition knowledge.
• Significant gaps in understanding healthy eating principles persist among consumers.
• Nutrition knowledge alone appears to have a limited impact on actual dietary behavior, suggesting other factors influence food choices.