Accessible and validation methods for collecting and assessing dietary information is critical to the many public health interventions. Traditionally, a nutritionist interview participants to capture what has been consumed in the previous 24 hours, and this is repeated several times to estimate average consumption. To conduct such interviews at scale requires large numbers of trained nutritionists, who use their expertise to probe for additional information which is often missed or forgotten. To analyse dietary information, each food and amount is then manually coded and entered into a database to produce the nutritional output, a process which is timely, expensive and can be prone to error.
Intake24 is a free multilingual online dietary capture and analysis tool which provides the same quality of data at a significantly lower cost. Based on the multiple-pass 24 hour recall method, the system enables participants to input all food and drink consumed, estimate portion size using visual guides, and review their input at each stage. The system has been designed to ask a series of prompt questions if food or drink items are considered missing, such as “did you have any butter on your toast?”
Intake24 automatically links to the food composition data and the weight of the food from the chosen portion size to calculate the nutritional output. The data from dietary surveys using Intake24 is available online and can be downloaded straight into a spreadsheet for easy analysis.