Table 1.

Examples of text messages from SmokefreeMOM.

	Message	Sending algorithm
Welcome message	Welcome to Smokefree Moms! Quitting smoking is the best thing for you and your baby! Up to 6 msgs/day. Msg&data rates may apply. Reply STOP to opt-out, HELP for info.	Triggered by enrollment
Pre-quit advice	SFM: Almost the big day! Throw any remaining cigs in the trash before you go to bed tonight. Get plenty of sleep. Wake up feeling fresh and ready!	Quit date -1, 10 a.m.
Message from peer ex-smoker	SFM/Lea: It was really hard for me to give up my morning cig. When is going to be hardest for you? Text 1 for when you wake in the morning, 2 for after you eat, and 3 after the kids go to bed.	Quit date -2, 12 p.m.
Quit day	SFM: Just 20 minutes after you stop smoking your blood circulation beings to improve—quitting will improve blood flow to your developing baby.	Quit date, 5 p.m.
Postquit advice	SFM: Feeling cranky? It will pass. Your body is in nicotine withdrawal. Text CRAVE at any time to help with a craving.	Quit date +2, 12 p.m.
Quit status check-in	How is it going? Have you smoked a cig, even a drag, in the past week? Text YES or NO	Quit date + 7, 2 p.m.
Baby tips	BabyTip: At 26 weeks, your baby has fingernails and may be 14 inches long from head to feet.	Due date - 94
DATE	SFM: Let’s set your new quit date for mm/dd/yy. Reply 1 to accept this date or send us another date in the next 2 weeks in MMDDYY format (051215 for May 12th).	User texts in DATE
GAME	SFM: Adults have 206 bones. When babies are born, how many bones do they have? A) 150 B) 200 C) 300. Reply with letter of your response.	User texts in GAME
FACT	Smoking speeds up heart rate and increases blood pressure. Every puff increases the carbon monoxide in your blood making less oxygen available to baby.	User texts in FACT
CRAVE	To calm self, breathe in through nose and stretch arms up to the sky. Breathe out through mouth and bring arms back down. For more, reply TIP or GAME.	User texts in CRAVE