Rates of dropout across the included studies reported by group allocation (where available)
| Intervention group | Control group | |
| Digital | ||
| Borgen et al36 | 34/115 (29.6%) | 41/123 (33.3%) |
| Carolan-Olan32 | N/A | N/A |
| Cheung et al28 | 21/40 (52.5%) | 12/20 (60%) |
| Holmes et al33 | 9/29 (31%) | 6/31 (19.4%) |
| Kim et al29 | 2/21 (9.5%) | 5/28 (17.9%) |
| McManus et al31 | 44% | 42% |
| Nicklas23 | 6/36 (16.7%) | 3/39 (7.7%) |
| Peacock et al30 | 5/16 (31.3%) | 3/15 (20%) |
| Telemedicine | ||
| Ferrara et al27 | 19/96 (19.8%) | 10/101 (9.9%) |
| Ferrara et al24 | 216/1187 (18.2%) | 207/1293 (16%) |
| Hedderson35 | N/A | N/A |
| Jelsma et al34 | 4/29 (13.8%) | 5/30 (16.7%) |
| McIntyre et al25 | 1/15 (6.7%) | 2/13 (15.4%) |
| Reinhardt et al26 | N/A | N/A |
N/A, not applicable.