Question: If your sample size required per study is 718 calculate the following When you have conducted previous longitudinal studies in adolescents, you have found that

If your sample size required per study is 718

calculate the following

When you have conducted previous longitudinal studies in adolescents, you have found that approximately 10% withdraw from the study (change schools or parents withdraw consent), so you are anticipating 10% loss to follow-up in this study. Use this information to estimate the final sample size per group and the total sample size you need for the study.

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