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| Анализ на мощността за многостепенни и смесени модели× | Смесен модел с ефекти× | |
|---|---|---|
| Област | Статистика | Статистика |
| Семейство≠ | Hypothesis test | Regression model |
| Година на възникване≠ | 1993 | 1982 |
| Създател≠ | Snijders & Bosker; Hox, Moerbeek & van de Schoot | Laird & Ware |
| Тип≠ | Sample-size planning for hierarchical designs | Mixed effects regression |
| Основополагащ източник≠ | Snijders, T.A.B. & Bosker, R.J. (2012). Multilevel Analysis: An Introduction to Basic and Advanced Multilevel Modeling (2nd ed.). SAGE. ISBN: 978-1849202015 | Laird, N. M., & Ware, J. H. (1982). Random-effects models for longitudinal data. Biometrics, 38(4), 963–974. DOI ↗ |
| Други названия | HLM power analysis, mixed-effects power analysis, clustered design power analysis, Çok Düzeyli / Karma Model Güç Analizi | LME, LMM, mixed model, random effects model |
| Свързани | 4 | 4 |
| Резюме≠ | Multilevel power analysis is a sample-size planning procedure designed for hierarchical, clustered, or longitudinal study designs in which observations are nested within higher-level units such as students within schools or patients within clinics. Formalized in the multilevel modeling literature by Snijders and Bosker (1993, expanded 2012) and Hox, Moerbeek, and van de Schoot (2017), it accounts for the intraclass correlation (ICC) and the design effect that arises when data are clustered, ensuring that both the number of clusters and the cluster size are adequate to detect a target effect. | A mixed effects model (or linear mixed model) extends ordinary regression by including both fixed effects — population-level parameters shared by all observations — and random effects that capture subject-, group-, or cluster-level variability. It is the standard tool for repeated-measures, longitudinal, and multilevel data where observations within the same unit are correlated. |
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