Compară metode

	Studiul pilot cu eșantionare în trepte	Studiu randomizat pe grupuri (Cluster Randomized Trial)
Domeniu	Inferență cauzală	Cercetare clinică
Familie	Regression model	Process / pipeline
Anul apariției	2007	1999-2000
Autorul original	Hussey and Hughes	Campbell, Grimshaw, Elbourne et al.
Tip	Phased implementation trial design	Research Design
Sursa seminală	Hemming, K., Haines, T. P., Chilton, P. J., Girling, A. J., & Lilford, R. J. (2015). The stepped wedge cluster randomised trial: rationale, design, analysis, and reporting. British Medical Journal, 350, h391.	Campbell, M. K., Grimshaw, J. M., & Elbourne, D. R. (2000). Intracluster correlation coefficients in cluster randomized trials: empirical insights into how should they be reported. BMC Medical Research Methodology, 4, 30.
Denumiri alternative	SWCRT, SW-CRT, Stepped Wedge Design	CRT, cluster RCT, cluster trial, group randomization
Înrudite	3	3
Rezumat	A stepped wedge cluster randomized trial is an experimental design where clusters (e.g., schools, hospitals, communities) are randomized to receive an intervention in a phased, staggered manner over time. First formally described by Hussey and Hughes in 2007, this design combines the benefits of cluster randomization with a time-stepped implementation strategy. It is particularly useful for evaluating the effectiveness of interventions in real-world healthcare and public health settings.	A cluster randomized trial (CRT) randomizes intact groups—schools, clinics, villages, or hospital wards—rather than individuals. Developed by Campbell, Grimshaw, and colleagues in the late 1990s to address real-world settings where intervention delivery or contamination occurs at the group level, CRTs are now standard for evaluating population-level, community-based, and policy interventions.