Design: Formative analysis; randomized trial with delayed intervention control group.
Setting: Tiburcio Vasquez Health Clinic (TVHC), a federally qualified health center in Hayward, California.
Sample: 29 Spanish-speaking Latinas with abnormal mammograms.
Methods: A Spanish text message was developed based on findings from two focus groups and five interviews with TVHC healthcare providers. Thirteen women were assigned to receive text messages within 24 hours of receipt of abnormal mammogram by TVHC (intervention group) and 16 to receive text messages four weeks later (delayed intervention group).