השוואת שיטות

	ניסוי מרובה זרועות עם סמיות יחידה	ניסוי מרובה זרועות
תחום	תכנון ניסויים	תכנון ניסויים
משפחה	Process / pipeline	Process / pipeline
שנת המקור	Mid-to-late 20th century	1990s–2000s (clinical formalization); multi-arm concept implicit in ANOVA-era factorial designs
הוגה השיטה	Developed within the clinical trials tradition; formalized by Friedman, Furberg, and DeMets and others in the 20th century	Developed within clinical trials methodology; formalized by Parmar, Royston and colleagues (UK MRC CTU, early 2000s)
סוג	Controlled experimental design	Experimental design
מקור מכונן	Friedman, L. M., Furberg, C. D., & DeMets, D. L. (2010). Fundamentals of Clinical Trials (4th ed.). Springer. ISBN: 978-1441915849	Royston, P., Parmar, M. K. B., & Qian, W. (2003). Novel designs for multi-arm clinical trials with survival outcomes with an application in ovarian cancer. Statistics in Medicine, 22(14), 2239–2256.
כינויים	single-masked multi-arm trial, single-blind multi-group experiment, unidirectional blinding multi-arm design, SB-MAT	multi-arm trial, multiple-arm experiment, multi-group experiment, many-arm design
קשורות	5	5
תקציר	A single-blind multi-arm experiment is a controlled experimental design that simultaneously compares three or more treatment conditions while blinding participants — but not investigators — to their group assignment. This configuration reduces response bias driven by participants' expectations, preserves operational feasibility when full blinding is impractical, and allows direct pairwise and omnibus comparisons across multiple arms within a single study.	A multi-arm experiment simultaneously compares three or more treatment or intervention conditions — each called an arm — against a shared control or against one another. By testing multiple alternatives in a single study, it yields more information per participant than running separate two-group experiments sequentially, while controlling the overall Type I error rate through pre-specified comparison strategies.