পদ্ধতির তুলনা করুন

	বাস্তবসম্মত পরিবেশগত গবেষণা	ডোজ-প্রতিক্রিয়া বিশ্লেষণ
ক্ষেত্র	মহামারীবিদ্যা	মহামারীবিদ্যা
পরিবার	Process / pipeline	Process / pipeline
উদ্ভবের বছর	1967–1982 (pragmatic concept 1967; ecological study formalized ~1982)	Conceptual roots 16th century; modern epidemiological application mid-20th century
প্রবর্তক	Morgenstern (ecological study framework); Schwartz & Lellouch (pragmatic design concept)	Paracelsus (conceptual foundation); formalized by John Snow and later Bradford Hill
ধরন	Observational ecological study with pragmatic framing	Quantitative analytical method
মৌলিক উৎস	Morgenstern, H. (1982). Uses of ecologic analysis in epidemiologic research. American Journal of Public Health, 72(12), 1336–1344.	Rothman, K. J., Greenland, S., & Lash, T. L. (2008). Modern Epidemiology (3rd ed.). Lippincott Williams & Wilkins. ISBN: 978-0781755641
অপর নাম	real-world ecological study, effectiveness ecological study, population-level pragmatic study, pragmatic ecologic design	exposure-response analysis, concentration-response modeling, dose-response modeling, DRA
সম্পর্কিত	5	4
সারসংক্ষেপ	A pragmatic ecological study is an observational epidemiological design that examines associations between exposures and outcomes at the population or group level — using routinely collected, real-world data — with the explicit goal of informing practical public health decisions under everyday conditions. Rather than controlling every variable in a laboratory-like manner, it embraces the complexity and heterogeneity of natural settings to answer effectiveness questions relevant to policy.	Dose-response analysis quantifies the relationship between the magnitude of an exposure (the dose) and the probability or rate of an outcome (the response). It is a core analytical strategy in epidemiology and toxicology, providing evidence that increasing exposure systematically increases — or decreases — the risk of disease. A demonstrated dose-response gradient is one of Bradford Hill's classic criteria supporting causal inference.