|Weighted event rates|
|Outcomes||No of studies||Daycare||Control||RRR (95% CI)||NNT (CI)|
|*Abbreviations defined in glossary; RRR, NNT, and CI calculated from data in article|
|Grade retention||5||27%||37%||36% (18 to 51)||10 (6 to 37)|
|Special education||4||18%||40%||59% (39 to 73)||5 (4 to 8)|
Review: non-parental daycare has short term and long term benefits for preschool children
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