Table 4.

Summary of comments provided by the expert panel and response by the research team in Round 2.

Expert Suggestions and Comments		Changes Made or Clarifications
Questionnaire instructions and requirements	Improve choice of wording.	As suggested.
	Improve questionnaire format and layout.	As suggested, particularly: -Pathway questions to guide participants to questions relevant to them. -Combined outcome of “Time of largest meal” with “Time of all eating occasions”.
Demographic data	Improve definition of “general population” as shift workers are technically within general population.	Removed, as redundant after addition of pathway questions.
	Allow participants to state if they go to both work and school, and the start and end times of each.	As suggested.
	What does the term “school” refer to?	Adults who are studying.
	Include option for non-standard shifts beyond morning/evening/night shifts.	Added option for split shift workers (refer to Discussion).
Outcomes of interest	Better capture concept of regularity: -Consider also capturing regularity of snacks. -Re-consider determining regularity across all days of the week and using Yes/No instead of Likert scale. -Consider using Likert scale of “Always, Usually, Sometimes, or Never” instead of % of time.	-Sub-question about regularity of snacks included. -No change in response to the other suggestions (refer to Discussion).
	What if shift workers have more than one sleep episode in between shifts?	They will be asked to choose times of main sleep, not naps. If they have ≥2 sleeps that are of equal duration, they may choose one, to be validated against data from sleep diaries/actigraphy in a later study.
	One may not be able to freely choose wake up time unaffected by other factors (e.g., children/pets, hobbies).	Participants asked to specify wake up time without alarm clock use only.
	Preference of time window for “day of a morning/afternoon/night shift” within which temporal patterns of eating are captured to be limited by sleep/wake time before and after the shift instead of 12 a.m.–12 a.m. limits for morning shifts and 12 p.m.–12 p.m. limits for afternoon and night shifts.	As suggested.
	Aid identification of eating occasion (≥210 kJ) with a calorie counter.
	Refine definitions of terms.
Additional outcomes to include	Food composition, as carbohydrate and fat-rich foods may be relevant in terms of timing of food intake.	Not included.