So sánh phương pháp

	Thử nghiệm lâm sàng Giai đoạn II được khớp cặp	Thử nghiệm lâm sàng ngẫu nhiên (RCT)
Lĩnh vực	Dịch tễ học	Dịch tễ học
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1960s–1980s (formalized with Simon optimal designs, 1989)	1948 (first rigorously conducted RCT — MRC streptomycin trial)
Người khởi xướng	Gehan (1961) for Phase II designs; matching frameworks adapted from case-control methodology	Austin Bradford Hill; MRC Streptomycin Trial team
Loại	Controlled clinical trial design	Interventional experimental study
Công trình gốc	Gehan, E. A. (1961). The determination of the number of patients required in a preliminary and a follow-up trial of a new chemotherapeutic agent. Journal of Chronic Diseases, 13(4), 346–353.	Friedman, L. M., Furberg, C. D., DeMets, D. L., Reboussin, D. M., & Granger, C. B. (2015). Fundamentals of Clinical Trials (5th ed.). Springer. ISBN: 978-3319185385
Tên gọi khác	matched Phase II trial, historically matched Phase II study, propensity-matched Phase II trial, externally controlled Phase II trial	RCT, randomized controlled trial, randomised controlled trial, clinical randomized trial
Liên quan	5	6
Tóm tắt	A matched Phase II clinical trial is a single-arm or small-controlled early-efficacy study in which treated patients are paired with matched controls — drawn from historical databases, registries, or concurrent external cohorts — on key prognostic variables such as age, disease stage, and performance status. This design allows preliminary efficacy assessment without a concurrent randomized arm, trading randomization for feasibility while partially controlling for confounding through the matching process.	A randomized clinical trial (RCT) is an experimental study design in which participants are randomly assigned to an intervention group or a control group, then followed prospectively to compare outcomes. Random allocation is the defining feature: it distributes known and unknown confounders across groups by chance, making the RCT the strongest individual study design for establishing causal efficacy of a treatment or intervention under controlled conditions.