Table 2.

Proposed recommendations for developing digital health content using ChatGPT and a summary of considerations for using this tool.

Step	Task	Consideration
1	Determine target behavior	Previous research Needs of the target population
2	Ground in behavior change theory	Stage of readiness of participants Needs of the population group
3	Design the intervention structure	Web or mobile based Length of the intervention Amount of content to be delivered in each bout (ie, how many words, characters, or pages of content to be delivered) Use co-design or other frameworks to ensure that the intervention aligns with the needs of the target population
4	Input intervention structure and behavior change constructs into ChatGPT	Structure prompt to input into ChatGPT (considering instruction, context, input data, and output indicator) Iteratively adapt prompts based on desired output Order in which relevant information relating to each construct is delivered, if not predefined by the literature
5	Revise the output of ChatGPT	Refer outputs to previous literature to ensure accuracy Confirm whether references used by ChatGPT are accurate
6	Customize the content to be delivered	Layout and design of content Images or graphics to supplement text output User experience and design of the intervention platform