Table 2.
Number of participants by health domain in the included studies evaluating specific mobile health apps (N=97).
| Health domains | Participants, N | Values, mean (SD) | Values, median (IQR) | Values, range |
| NCDa self-management | 15,111 | 888.9 (2433.3) | 56 (113.5-31) | 10-9051 |
| Mental health | 5710 | 285.5 (470.1) | 81 (231.8-31) | 14-1709 |
| Substance use | 21,038 | 2337.6 (6344.8) | 99 (683.0-24) | 9-19,233 |
| Nutrition | 13,042 | 2173.7 (5195.1) | 22 (3342-12) | 12-12,777 |
| Physical activity | 946 | 157.7 (147.5) | 151 (301-22) | 19-301 |
| Weight loss | 659 | 73.2 (54.4) | 50 (120.5-28.5) | 17-176 |
| MLIb | 2274 | 284.3 (531.9) | 64.5 (331.3-29.3) | 20-1561 |
| Mindfulness | 12,608 | 1400.9 (4031.5) | 46 (128-21.5) | 15-12,151 |
| Other NCDs | 658 | 54.8 (48.6) | 44 (59.8-20.3) | 15-189 |
| All domains | 72,046 | 750.5 (2800.7) | 56 (129.5-26) | 9-19,233 |
aNCD: noncommunicable disease.
bMLI: multicomponent lifestyle intervention.