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Table 1.
Number of participants in the waves
| 2 & 3 | 2 & 4 | 2 & 3 & 4 | ||
|---|---|---|---|---|
| Wave 2 | 514 | 482 | 393 | 386 |
| 3 & 4 | ||||
| Wave 3 | 517 | 403 | ||
| Wave 4 | 412 |