เปรียบเทียบวิธี

	การทดลองแฟกทอเรียลแบบครอสโอเวอร์	การทดลองแบบสุ่มที่มีปัจจัยหลายตัวประกอบ
สาขาวิชา	การออกแบบการทดลอง	การออกแบบการทดลอง
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1920s–1960s (synthesis of factorial and crossover traditions)	1926 (Fisher factorial foundations); 2000s–2010s (clinical factorial RCT formalization)
ผู้ริเริ่ม	R. A. Fisher (factorial principles, 1920s); crossover integration developed in biostatistics through mid-20th century	R. A. Fisher (factorial design foundations); adapted into clinical trials via MOST framework (Collins et al., 2014)
ประเภท	Experimental design	Experimental trial design
แหล่งต้นตำรับ	Jones, B., & Kenward, M. G. (2014). Design and Analysis of Cross-Over Trials (3rd ed.). Chapman and Hall/CRC. ISBN: 978-1439861424	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.
ชื่อเรียกอื่น	within-subject factorial design, repeated-measures factorial experiment, factorial crossover trial, crossover factorial trial	Factorial RCT, factorial trial, multi-factor RCT, factorial experiment with randomization
ที่เกี่ยวข้อง	5	6
สรุป	A crossover factorial experiment combines two powerful design principles: factorial structure, which studies multiple factors and their interactions simultaneously, and crossover structure, in which each participant receives more than one treatment combination across sequential periods. By serving as their own control, participants reduce between-subject variability, improving statistical power while also revealing how different factor levels interact within the same individual.	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.