পদ্ধতির তুলনা করুন
নির্বাচিত পদ্ধতিগুলো পাশাপাশি পর্যালোচনা করুন; যে সারিগুলোয় পার্থক্য আছে সেগুলো চিহ্নিত করা হয়।
| প্রাগম্যাটিক কন্ট্রোল গ্রুপ পরীক্ষামূলক নকশা× | ক্লাস্টার র্যান্ডমাইজড কন্ট্রোলড ট্রায়াল× | |
|---|---|---|
| ক্ষেত্র | পরীক্ষামূলক নকশা | পরীক্ষামূলক নকশা |
| পরিবার | Process / pipeline | Process / pipeline |
| উদ্ভবের বছর≠ | 1967 (seminal distinction); 2009 (PRECIS operationalization) | 1978–1980s |
| প্রবর্তক≠ | Schwartz & Lellouch (pragmatic vs explanatory distinction); extended by PRECIS framework (Thorpe et al.) | Cornfield (1978); systematised by Donner and colleagues (1980s) |
| ধরন≠ | Experimental design (pragmatic variant) | Experimental design |
| মৌলিক উৎস≠ | Schwartz, D., & Lellouch, J. (1967). Explanatory and pragmatic attitudes in therapeutical trials. Journal of Chronic Diseases, 20(8), 637–648. DOI ↗ | Donner, A., & Klar, N. (2000). Design and Analysis of Cluster Randomization Trials in Health Research. Arnold. ISBN: 978-0340652978 |
| অপর নাম | pragmatic controlled trial, effectiveness trial with control group, real-world control group design, pragmatic comparative design | cluster RCT, group-randomized trial, community randomized trial, cluster-randomized experiment |
| সম্পর্কিত≠ | 6 | 4 |
| সারসংক্ষেপ≠ | A pragmatic control group experimental design tests whether an intervention works under routine, real-world conditions by comparing it against a control condition — typically usual care or an active comparator — rather than a tightly controlled placebo. It prioritises external validity and applicability over the internal purity of an explanatory efficacy trial, asking whether an intervention makes a meaningful difference to people as they are actually treated in practice. | 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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