قارن الطرق

	التجربة العشوائية المجمعة ذات الوتد المتدرج	التجربة العشوائية العنقودية
المجال	الاستدلال السببي	البحوث السريرية
العائلة	Regression model	Process / pipeline
سنة النشأة	2007	1999-2000
صاحب الطريقة	Hussey and Hughes	Campbell, Grimshaw, Elbourne et al.
النوع	Phased implementation trial design	Research Design
المصدر التأسيسي	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.
الأسماء البديلة	SWCRT, SW-CRT, Stepped Wedge Design	CRT, cluster RCT, cluster trial, group randomization
ذات صلة	3	3
الملخص	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.