Quality assessment for the eligible studies according to the NOS
| ID | First author | Selection* | Comparability* | Outcome* |
|---|---|---|---|---|
| 1 | Salazar-Martinez | 4 | 2 | 2 |
| 2 | Greenberg | 4 | 2 | 1 |
| 3 | Song | 4 | 2 | 2 |
| 4 | van Dam | 4 | 2 | 2 |
| 5 | Hu | 4 | 2 | 3 |
| 6 | Pereira | 4 | 2 | 2 |
| 7 | Iso | 4 | 2 | 2 |
| 8 | Hamer | 4 | 2 | 2 |
| 9 | Odegaard | 4 | 2 | 2 |
| 10 | Boggs | 4 | 2 | 2 |
| 11 | Hayashino | 4 | 2 | 2 |
| 12 | InterAct Consortium | 4 | 2 | 2 |
A study was awarded a maximum of one star for each numbered item within the selection and outcome categories. Therefore, a maximum of four stars were given for selection, three stars for outcome. A maximum of two stars were given for comparability. More stars mean higher quality of the eligible studies.
*Means the number of stars.