Table 12.
Number of participants in each included study.
| Number of participants | Number of studies |
|---|---|
| 1 | 11 |
|
| |
| 2 to 9 | 29 |
|
| |
| 10 to 19 | 14 |
|
| |
| 20 to 30 | 16 |
|
| |
| 31 to 54 | 3 |
|
| |
| Unknown | 2 |
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