Table 1.
Basic characteristics of included systematic reviews (n = 57)
| Item | n (%) |
|---|---|
| Publication year of included systematic reviews | |
| 2024 | 8 (14.04) |
| 2023 | 10 (17.54) |
| 2022 | 7 (12.28) |
| 2021 | 9 (15.79) |
| 2020 | 16 (28.07) |
| 2016 − 2019 | 7 (12.28) |
| Journals where included systematic reviews were published* | |
| Oral Dis | 3 (5.26) |
| Acta Odontol Scand | 2 (3.51) |
| BMC Oral Health | 2 (3.51) |
| Clin Oral Investig | 2 (3.51) |
| J Clin Med | 2 (3.51) |
| J Clin Periodontol | 2 (3.51) |
| Med Oral Patol Oral Cir Bucal | 2 (3.51) |
| PLoS One | 2 (3.51) |
| Number of included studies for individual systematic review | |
| > 50 | 6 (10.53) |
| 40 − 50 | 1 (1.75) |
| 30 − 39 | 5 (8.77) |
| 20 − 29 | 6 (10.53) |
| 10 − 19 | 22 (38.60) |
| ≤ 9 | 17 (29.82) |
| Ascertainment of exposure and outcome | |
| Yes | 51 (89.47) |
| No | 6 (10.53) |
| Use of meta-analysis for individual systematic review | |
| Yes | 54 (94.74) |
| No | 3 (5.26) |
*Only journals that published more than 2 systematic reviews were shown in the table. The full list of journals can be seen in Additional file 1: Table S2