เปรียบเทียบวิธี

	การทดลองแบบสุ่มที่มีปัจจัยหลายตัวประกอบ	การทดลองแบบแฟกทอเรียล
สาขาวิชา	การออกแบบการทดลอง	การออกแบบการทดลอง
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1926 (Fisher factorial foundations); 2000s–2010s (clinical factorial RCT formalization)	1926–1935
ผู้ริเริ่ม	R. A. Fisher (factorial design foundations); adapted into clinical trials via MOST framework (Collins et al., 2014)	Ronald A. Fisher
ประเภท	Experimental trial design	Quantitative experimental design
แหล่งต้นตำรับ	Collins, L. M., Dziak, J. J., Kugler, K. C., & Trail, J. B. (2014). Factorial experiments: Efficient tools for evaluation of intervention components. American Journal of Preventive Medicine, 47(4), 498–504.	Fisher, R. A. (1935). The Design of Experiments. Oliver and Boyd.
ชื่อเรียกอื่น	Factorial RCT, factorial trial, multi-factor RCT, factorial experiment with randomization	factorial design, factorial ANOVA design, multi-factor experiment, crossed-factor design
ที่เกี่ยวข้อง	6	6
สรุป	A factorial randomized controlled trial (factorial RCT) is an experimental design in which participants are randomly assigned to every possible combination of two or more independent factors (treatments or intervention components) simultaneously. This allows researchers to estimate the main effect of each factor and their interactions within a single, efficient trial, rather than running separate experiments for each factor.	A factorial experiment is an experimental design in which two or more independent variables (factors) are manipulated simultaneously, and every combination of their levels is tested. Introduced by Ronald Fisher in the 1920s–1930s, it is the standard approach whenever a researcher needs to detect not only the main effect of each factor but also whether the effect of one factor depends on the level of another — the interaction effect.