手法を比較

	前向き診断精度研究	ランダム化比較試験 (RCT)
分野	疫学	疫学
系統	Process / pipeline	Process / pipeline
提唱年	Formalized 2000s; practice dates to mid-20th century	1948 (first rigorously conducted RCT — MRC streptomycin trial)
提唱者	Established through STARD initiative (Bossuyt, Reitsma et al., 2000s)	Austin Bradford Hill; MRC Streptomycin Trial team
種類	Observational / evaluative study design	Interventional experimental study
原典	Bossuyt, P. M., Reitsma, J. B., Bruns, D. E., Gatsonis, C. A., Glasziou, P. P., Irwig, L., ... & Cohen, J. F. (2015). STARD 2015: an updated list of essential items for reporting diagnostic accuracy studies. BMJ, 351, h5527.	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
別名	prospective DTA study, prospective test accuracy study, forward-looking diagnostic study, prospective index test evaluation	RCT, randomized controlled trial, randomised controlled trial, clinical randomized trial
関連	6	6
概要	A prospective diagnostic accuracy study enrolls participants before any test results are known and follows them forward in time to evaluate how well an index test (the test under evaluation) distinguishes individuals with and without a target condition, using a reference standard applied independently. Key accuracy metrics include sensitivity, specificity, positive and negative predictive values, and the area under the ROC curve. The prospective design reduces many biases inherent in retrospective test evaluations.	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.