Table 3 Outcome measure items

1

Weight, blood pressure, blood sugar measurement

2

Health information literacy

3

Physical and obstetric characteristics (including height, weight, gestational age, date of birth, etc.)

4

Basic demographic characteristics (spouse, marital status, economic status, etc.)

5

Basic psychological status (prenatal-postpartum depression questionnaire, high-risk-related trauma questionnaire, anxiety, and psychological state)

6

International Physical Activity and Exercise Questionnaire (IPAQ)

7

Nutrition and Dietary Questionnaire

8

Newborn information data (weight, head circumference, pregnancy method, birth period, etc.) (after 6 weeks/in case of delivery)

9

Questions for high-risk mothers

10

Smartphone app evaluation questionnaire

(only intervention group)

11

App usage effect confirmation questionnaire

(only intervention group)

12

Self-report (only intervention group)