Table 1.
Characteristics of randomized controlled trials included in the review
| Study and groups | Intervention | Number of participants | Age (range of years) |
Sex (% of male) |
Acne severity |
|---|---|---|---|---|---|
| Boker et al, 20124 | |||||
| Treatment | Text message reminders | 19 | 14–35 (mean, 22.8) | 52.6 | Mild to moderate |
| Control | None | 21 | 12–32 (mean, 22.5) | 71.4 | Mild to moderate |
| Yentzer et al, 20115 | |||||
| Treatment | Telephone call reminders | 15 | NA | NA | Moderate to severe |
| Control 1 | None | 16 | |||
| Control 2 | Frequent office visits | 15 | |||
| Control 3 | Parental reminders | 15 | |||
| Yentzer et al, 20116 | |||||
| Treatment | Internet-based | 10 | 13–18 | NA | Mild to moderate |
| Control | None | 10 | |||
| Wang et al, 20117 | |||||
| Treatment | Internet (acne-related questions) | 25 | 13–69 | NA | Mild to moderate |
| Control | Internet (nondermatologic-related questions) | 25 | |||
Abbreviation: NA, not applicable.