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Εξετάστε τις επιλεγμένες μεθόδους δίπλα-δίπλα· οι γραμμές που διαφέρουν επισημαίνονται.
| Πειραματική Δομή Πλήρους Παραγοντικού Σχεδίου με Τυχαιοποίηση Ομάδων× | Συgeordnetή Ελεγχόμενη Δοκιμή – Τυχαιοποίηση σε επίπεδο ομάδας× | |
|---|---|---|
| Πεδίο | Πειραματικός Σχεδιασμός | Πειραματικός Σχεδιασμός |
| Οικογένεια | Process / pipeline | Process / pipeline |
| Έτος προέλευσης≠ | Late 20th–early 21st century (formalized ~1998–2014) | 1978–1980s |
| Δημιουργός≠ | Synthesis of cluster randomization (Murray, 1998) and factorial design traditions (Fisher, 1935; Collins et al., 2014) | Cornfield (1978); systematised by Donner and colleagues (1980s) |
| Τύπος | Experimental design | Experimental design |
| Θεμελιώδης πηγή≠ | Murray, D. M. (1998). Design and Analysis of Group-Randomized Trials. Oxford University Press. ISBN: 978-0195120264 | Donner, A., & Klar, N. (2000). Design and Analysis of Cluster Randomization Trials in Health Research. Arnold. ISBN: 978-0340652978 |
| Εναλλακτικές ονομασίες | cluster RCT full factorial, group-randomized full factorial design, CRT full factorial, cluster full factorial trial | cluster RCT, group-randomized trial, community randomized trial, cluster-randomized experiment |
| Συναφείς≠ | 6 | 4 |
| Σύνοψη≠ | A cluster-randomized full factorial experiment assigns intact groups (clusters) rather than individuals to every possible combination of two or more experimental factors. All factor-level combinations are tested simultaneously, enabling estimation of both main effects and all interaction effects, while preserving the integrity of naturally occurring social or organizational units such as schools, clinics, or communities. | A cluster randomized controlled trial (cluster RCT) is an experimental design in which intact social or organisational groups — such as schools, clinics, villages, or workplaces — are randomly assigned to treatment conditions rather than individual participants. Outcomes are still measured at the individual level, but the unit of randomization is the cluster. This design is essential when an intervention is delivered to whole groups, when there is a risk of contamination between participants in the same setting, or when individual randomization is logistically or ethically impractical. |
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