Table 1.

Text message examples by category.

Text message category		Example message
Prompted messages
	Triviaa	Does smoking help you lose weight? Text back 1 for yes or 2 for no.
	More informationa	Losing your hair during treatment is hard for most patients with cancer. If you lost hair, text back 1 for info on your hair after cancer.
	Patient experiencea	Your treatment & some medications can make skin more sensitive to sun than it used to be. Did you apply sunscreen today? Text back 1 if yes, or 2 if no.
	Goal-tailored	Think about your physical activity level now compared to 3 months ago - text back if you feel 1 better, 2 the same, or 3 worse
	Age-tailored	Managing the healthcare system & learning about insurance can be tricky. Text 1 to learn more about health insurance as a young adult & survivor.
	Goal motivationa	How motivated are you to be more active? Text back: 1 - Not at all, 2 - Slightly, 3 - Somewhat, 4 - Very, 5 - Extremely
	Goal progressa	How much progress have you made on your goal to be more active? Text back: 1-None, 2-small amount, 3-moderate amount, 4-a lot, 5-huge amount
	Medication remindera	Have you been taking your medication? Text 0 - I am not taking medication anymore, 1 - No, not really, 2 - sometimes, 3 - always.
	Appointment remindera	You have an appointment to come to CHOP in 2 days, on 11/28/2014 at 3:00PM. Do you know how you are getting there? Text back 1 for Yes or 2 for No.
Unprompted messages
	Information	Feeling tired right after treatment is totally normal. Healing takes energy & time. Make sure to listen to your body & pace yourself throughout the day.
	Goal-tailored	Put physical activity in your schedule - setting aside a specific time of the day will help prevent you from putting it off until later.
	Age-tailored	Feeling connected when you go back to school can be tough. Join a club or sport that interests you to find peers who enjoy similar things.

^aAnalyzed responsivity to this type of prompted text message.