Table 3.
Number of Studies by Topic and mHealth Intervention (Top Table) and by Topic and Age Category (Bottom Table)
| Intervention/Study Topic | Sexual/Reproductive Health | Diet/Nutrition or Weight | Physical Activity | General Health | Mental Health | Alcohol Use | Total |
|---|---|---|---|---|---|---|---|
| Text Messages | 8 | 3 | 3 | 1 | 4 | 0 | 19 |
| Mobile Apps | 5 | 6 | 6 | 6 | 4 | 1 | 27 |
| Wearables | 1 | 1 | 7 | 2 | 0 | 0 | 11 |
| Social Media | 0 | 1 | 1 | 1 | 0 | 0 | 3 |
| Website | 0 | 1 | 0 | 2 | 4 | 2 | 9 |
| Emails | 1 | 2 | 0 | 1 | 1 | 0 | 5 |
| Videos | 0 | 0 | 0 | 1 | 0 | 0 | 1 |
| Virtual Reality | 0 | 0 | 0 | 1 | 0 | 0 | 1 |
| TOTAL | 15 | 14 | 17 | 15 | 13 | 3 | – |
| Ages/Study Topic | Sexual/Reproductive Health | Diet/Nutrition or Weight | Physical Activity | General Health | Mental Health | Alcohol Use | Total |
| Young Adults | 0 | 5 | 4 | 2 | 1 | 0 | 12 |
| Young Adults and Adolescents | 7 | 0 | 0 | 0 | 2 | 1 | 10 |
| Adolescents | 4 | 2 | 4 | 3 | 3 | 2 | 18 |
| Children and Adolescents | 1 | 2 | 0 | 0 | 0 | 0 | 3 |
| Children | 0 | 0 | 3 | 2 | 0 | 0 | 5 |
| TOTAL | 13 | 9 | 11 | 7 | 6 | 3 | – |
Note: the total number of studies is greater than the number of reviewed studies due to the use of multiple interventions for some studies.