While recent studies have been conducted demonstrating the beneficial outcomes of low glycemic index foods on individuals’ health, a tool to assess the number of low glycemic index foods consumed by an individual has not been previously designed for use in public health settings. In order for public health recommendations on low glycemic index foods to be implemented successfully, studies must demonstrate effective methods for promoting dietary behavioral change.
Once these methods have been used to educate patients, it is essential to have adequate tools to measure the impact of the dietary behavioral change. Food frequency questionnaires are often used in epidemiological studies; however this tool usually contains over 100 items, may require up to one hour to complete and demands a high level of literacy.
New tools are needed to obtain valuable knowledge regarding one’s intake of low glycemic index foods through dietary assessment. Dr. Carla Miller at The Ohio State University developed a glycemic index food behavior checklist to assess the number of low glycemic index foods consumed by individuals on a daily basis (see Appendix A). Two studies were conducted to modify and validate this low glycemic index food behavior checklist. First cognitive interviews were conducted to modify the GI checklist using the insight obtained from the interviews. Following the modification of the original checklist, the revised checklist was validated using the Block 2005 Food Frequency Questionnaire (FFQ).
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