TableĀ 1

Short message service (SMS) messages, by randomised group and time of delivery

Randomised groupMessage categoriesMessage delivery time and total number of SMS messages
Sign-up dayFirst trimesterSecond trimesterThird trimesterFinal day
Control group (25)Fetal development (19)26632
Reminders for prenatal visit and hospital delivery (6)114
Care-seeking group (82)Fetal development (19)26632
Reminders for prenatal visit and hospital delivery (8)224
Recognition of danger signs (45)52317
Reminders for government-subsidised projects (10)325
Good household prenatal practice group (91)Fetal development (19)26632
Reminders for prenatal visit and hospital delivery (6)114
Healthy lifestyle (nutrition, physical activity, etc; 37)15166
Mental health during pregnancy (8)143
Pain management (9)45
Labour (6)33
Breast feeding (6)6
Full SMS bank (148)Full bank (148)23260522