Development of a questionnaire for assessing the impact of children's food marketing exposure on diet-related outcomes.

The final 15-item questionnaire provides a valid and reliable survey instrument for measuring the impact of unhealthy food marketing on children's diet-related outcomes. This instrument will be useful for gathering local evidence on the need for policy reform to protect children from unhealthy food marketing in Thailand. The instrument also provides a cost-effective approach for generating evidence in other jurisdictions to propel policy actions. This is a pilot study and the validity and reliability needs further testing after a larger-scale roll-out.