Table 7.

Summary of utility and perceived acceptability of SMS text message support among 334 intervention participants. Response options were “Strongly agree,” “Agree,” “Neutral,” “Disagree,” and “Strongly disagree” for the first 6 items and final item. We report the proportion for “Agree” and “Strongly agree.” For the first 3 questions regarding message characteristics, we report the percentage of participants who answered.

Process Grouping	Question	Agree or Strongly Agree
Usefulness and understanding	Found messages useful Messages were easy to understand	298/344 (86.6%) 336/344 (97.7%)
Influence on motivation and behavior change	Messages motivated change Diet more healthy because of messages Exercise increased because of messages Messages reminded them to take their medicines	217/344 (63.1%) 209/344 (60.8%) 168/344 (48.8%) 204/344 (59.3%)
Message saving and sharing	Read at least three-fourths of messages Deleted messages Saved messages Showed messages to family or friends Forwarded messages to family or friends	318/344 (92.4%) 47/344 (13.7%) 273/344 (79.3%) 187/344 (54.4%) 41/344 (11.9%)
Appropriate message characteristics	Message language was appropriate Number of messages per week was appropriate Program length was appropriate Time of day messages received was appropriate	311/344 (90.4%) 300/344 (87.2%) 295/344 (85.8%) 258/344 (75.0%)