Validity and reliability of a Two-Minute Assessment rapid dietary questionnaire measuring healthy eating behaviours among Hong Kong primary school students.

Poor dietary intake is one of the causes of obesity. Children nowadays consume more energy-dense foods, foods away from home, commercially prepared or processed foods, but less fruits and vegetables, and often skip breakfast.1,2 To correct dietary imbalances, dietary assessment is needed to design effective interventions. However, common dietary assessment methods, such as food records and 24-hour dietary recall, are not feasible in schools, communities, and most clinical settings, owing to their time-consuming, labour-intensive, and expensive nature. Therefore, a rapid, reliable, and valid assessment tool should be developed. This study aimed to test the reliability and validity of a Two-Minute Assessment (TMA) among Hong Kong primary school students.