General characteristics of the included studies
| RCTs’ characteristics | Diabetes type 1 RCTs (n=231) | |
| Journals’ impact factor | High (≥8.42) | 59 (25.5) |
| Medium (≥2.57 and <8.42) | 115 (49.8) | |
| Low (<2.57) | 42 (18.2) | |
| Unknown | 15 (6.5) | |
| Age range | Range of actual age (years) | 1–21 |
| Range of mean (years) | 2.9–17.7 | |
| Type of design | Parallel | 177 (76.6) |
| Crossover | 54 (23.4) | |
| Sample size | Range | 7–689 |
| Mean (SD) | Mean: 91.37 (103.38) | |
| Median (IQR) | Median: 51.5 (30–110.75) | |
| Type of intervention | Insulin/drug based | 91 (39.4) |
| Diet based | 21 (9.1) | |
| Education based | 41 (17.7) | |
| Other medical intervention | 17 (7.4) | |
| Others | 61 (26.4) | |
| Controls | Placebo | 29 (12.5) |
| Usual care/no treatment/waitlist | 97 (42) | |
| Other treatment | 105 (45.5) |
Data are presented as n (%).
RCT, randomised controlled trial.