Table 1.

Behavior change techniques used.

Theoretical construct or domain	Behavior change techniques
Risk perception	Information about health consequences
Outcome expectancy	Information about health consequences
	Information about social and environmental consequences
	Credible source
	Comparative imagining of future outcomes
Self-efficacy	Verbal persuasion about capability
	Vicarious consequences
	Instruction on how to perform the behavior
Social support	Social support (practical)
	Social support (unspecified)
Intention	Goal setting (outcome)
Memory, attention, and decision processes	Prompts or cues
Action planning	Action planning
Coping planning	Problem solving
Behavioral regulation	Self-monitoring of behavior (optional)
	Adding objects to the environment (optional)
	Nonspecific reward (optional)