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Efficacy of the treatment
| Events (E) | Non-events (N) | Event rate (ER) | |
|---|---|---|---|
| Xylitol group | 8 | 1,216 | 0.006 |
| Non-xylitol group | 53 | 1,394 | 0.036 |
An event was defined as a new carious lesion (initial or manifest), developed during the 2-year follow-up period in both groups; NNT = 33.23
