Table 2.

Most commonly texted MILK^a keywords.

Keyword	Timing of texts with a keyword prompt	Topical area	Number of participants texting, n
Sleep	Postpartum, weeks 6 and 7	Week 6: Maximizing sleep length/quality for the breastfed infant; Week 7: Tips for consolidating sleep for the breastfeeding mother	68; 54
Schedule	Postpartum, week 6	Norms for sleeping/feeding pattern emergence in infants; tips for encouraging the formation of desired sleeping/feeding habits	65
Norms	Postpartum, week 4	Average milk intake volume and weight gain for a 3- to 4-week-old infant	59
Reasons	Postpartum, week 5	Potential rationale for perceived decrease in milk volume between postpartum weeks 5 and 6	54
Sign	Postpartum, week 2	Indicators of satiety among breastfed infants	54

^aMILK: Mobile, semiautomated text message-–based Intervention to prevent perceived Low or insufficient milK supply.