Table 1.

Summary of message types and content

	Number of messages	Message format	Excerpt of message text
Information about the law	2	Text with audio	“It is important to know what was approved. It is still illegal to use marijuana in public. Just like alcohol, it’s illegal to use marijuana under the age of 21.”
		Poster	“With marijuana stores opening we need to remember that DUI doesn’t change. It’s still illegal.”
Advice/conversation starters	2	Text with audio	“Now that it’s legal for those over 21, it’s more important than ever to talk with your kids about the risks of marijuana use. They really do hear you.”
		Poster	“There’s more to it than just talking. It’s about listening. Listen to your teen’s thoughts about marijuana. Then discuss your family’s expectations.”
Consequences/positive alternatives	3	Poster	“Some people say that ‘everybody’s doing it’ to justify using marijuana themselves. Nobody can make you use. It’s a choice.”
		Slide show	“Smoking weed once might not kill you, but repeated use can lead to problems you may not expect. [Image of person getting DUI.] Marijuana can close doors to opportunities. Keep your doors open.”
		Slide show	“Adolescence is a period of exploration and creative development. [Image of hands with cigarette rolling paper, turns it into origami bird.] It’s your life, make something cool.”
Harmful effects of marijuana use	2	Poster	“Marijuana use can lead to health, safety, social and learning problems – especially for young people.”
		Poster	“Marijuana use affects developing brains differently than adult brains. Young people lack the judgement skills of adults, and early-onset marijuana use is more likely to lead to addiction.”

Note: DUI = driving under the influence.