Pre-specifying the smallest effect size of interest ( 47 ) and/or employing the use of discovery samples for model-fitting and replication or holdout samples for model testing might also be useful ( 48 ), especially because small effects are likely to be significant when sample sizes are large.
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A Researcher's Guide to the Measurement and Modeling of Puberty in the ABCD Study<sup>®</sup> at Baseline.
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