Table 1.

Attributes and attribute levels in an ecological momentary assessment discrete choice experiment.

Attributes and attribute levels		Descriptions
Prompt frequency
	0-1 per day	None or only 1 survey
	2-3 per day	2-3 surveys
	4-5 per day	4-5 surveys
	≥6 per day	6 or more surveys
Number of questions per prompt
	1 question	1 question
	2-3 questions	2-3 questions
	4-5 questions	4-5 questions
	≥6 questions	6 or more questions
Prompt type
	Event-contingent	Self-initiated when a predefined event has occurred (eg, smoking a cigarette, snacking between meals, or being in a specific location such as a bar)
	Signal-contingent	At random times
	Time-contingent	On fixed times
	Mixed	Combination of random and fixed times
Health topic
	Nicotine or tobacco use	Nicotine or tobacco use
	Alcohol use	Alcohol drinking
	Marijuana use	Marijuana use
	Physical activity	Exercise
	Nutrition	Diet or nutrition
	Sleep	Sleep
Assessment duration
	≤1 month	1 month or shorter
	>1 but <6 months	More than 1 month but less than 6 months
	≥6 but <12 months	More than 6 months but less than 1 year
	≥1 year	1 year or longer