পদ্ধতির তুলনা করুন

	প্রাগম্যাটিক ফ্যাক্টোরিয়াল এক্সপেরিমেন্ট	ক্লাস্টার র‍্যান্ডমাইজড ট্রায়াল
ক্ষেত্র	পরীক্ষামূলক নকশা	ক্লিনিক্যাল গবেষণা
পরিবার	Process / pipeline	Process / pipeline
উদ্ভবের বছর	2000s–2010s (formal integration)	1999-2000
প্রবর্তক	Synthesized from pragmatic trial methodology (Schwartz & Lellouch, 1967) and factorial design principles (Fisher, 1935); formalized in clinical research contexts in the 2000s–2010s	Campbell, Grimshaw, Elbourne et al.
ধরন	Experimental trial design	Research Design
মৌলিক উৎস	Loudon, K., Treweek, S., Sullivan, F., Donnan, P., Thorpe, K. E., & Zwarenstein, M. (2015). The PRECIS-2 tool: designing trials that are fit for purpose. BMJ, 350, h2147.	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.
অপর নাম	pragmatic factorial trial, pragmatic factorial RCT, real-world factorial design, PFE	CRT, cluster RCT, cluster trial, group randomization
সম্পর্কিত	3	3
সারসংক্ষেপ	A pragmatic factorial experiment combines two powerful methodological frameworks: the factorial experimental design — which tests multiple intervention components simultaneously — and the pragmatic trial orientation, which prioritizes real-world applicability, broad eligibility criteria, and flexible delivery conditions. The result is a design that efficiently evaluates which components of a complex intervention work, and whether they interact, while maintaining ecological validity for health, behavioral, and educational research.	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.