Development of a reliable and valid nutritional knowledge questionnaire of urban South African adolescents

Key Points

• To develop a reliable and valid questionnaire to assess nutritional knowledge in urban South African adolescents.
• Developed a nutritional knowledge questionnaire with construct, face, and content validity.
• Evaluated internal consistency across different school types and demographics.
• Compared responses between children at disadvantaged schools and multiracial schools.
• Internal consistency was found to be low in adolescents at disadvantaged schools compared to those in multiracial schools.
• The study suggests that trained interviewers could improve test outcomes for students at disadvantaged schools.