পদ্ধতির তুলনা করুন
নির্বাচিত পদ্ধতিগুলো পাশাপাশি পর্যালোচনা করুন; যে সারিগুলোয় পার্থক্য আছে সেগুলো চিহ্নিত করা হয়।
| চতুর্থ পর্যায় অধ্যয়ন× | র্যান্ডমাইজড ক্লিনিক্যাল ট্রায়াল (RCT)× | |
|---|---|---|
| ক্ষেত্র | মহামারীবিদ্যা | মহামারীবিদ্যা |
| পরিবার | Process / pipeline | Process / pipeline |
| উদ্ভবের বছর≠ | Formalised 1970s–1990s (ICH E3 guideline 1994) | 1948 (first rigorously conducted RCT — MRC streptomycin trial) |
| প্রবর্তক≠ | Regulatory agencies and pharmaceutical industry (ICH, FDA, EMA frameworks) | Austin Bradford Hill; MRC Streptomycin Trial team |
| ধরন≠ | Post-marketing observational or interventional study | Interventional experimental study |
| মৌলিক উৎস≠ | International Conference on Harmonisation (ICH). (1994). ICH Harmonised Tripartite Guideline: Structure and Content of Clinical Study Reports E3. ICH Secretariat. link ↗ | 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 |
| অপর নাম | post-marketing surveillance study, post-approval study, Phase 4 study, PMS study | RCT, randomized controlled trial, randomised controlled trial, clinical randomized trial |
| সম্পর্কিত≠ | 5 | 6 |
| সারসংক্ষেপ≠ | A Phase IV study is a post-marketing surveillance study conducted after a drug, device, or intervention has received regulatory approval. Its primary purpose is to monitor long-term safety, detect rare adverse events, assess effectiveness in routine clinical practice, and explore new indications or populations not adequately represented in earlier trials. Phase IV evidence accumulates continuously throughout a product's commercial life. | 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. |
| ScholarGateডেটাসেট ↗ |
|
|