Võrdle meetodeid

	Adaptive Ecological Study	Adaptiivne uurimisdisain	Ökoloogiline uuring
Valdkond	Epidemioloogia	Kliinilised uuringud	Epidemioloogia
Perekond	Process / pipeline	Process / pipeline	Process / pipeline
Tekkeaasta	1990s–2000s (adaptive extensions of classical ecological designs)	1990s-2000s	19th century (Snow 1854); formalised mid-20th century
Looja	Building on classical ecological epidemiology (Durkheim, Snow, Morgenstern); adaptive extensions developed in late 20th–early 21st century methodological literature	Stephen Pocock, Christopher Jennison, and statistical methodologists; FDA formalized guidance 2019	Various; foundational work by John Snow (1854) and systematised in modern form by Brian MacMahon and colleagues
Tüüp	Observational study design	Research Design	Observational epidemiological study
Algallikas	Morgenstern, H. (1998). Ecologic studies. In K. J. Rothman & S. Greenland (Eds.), Modern Epidemiology (2nd ed., pp. 459–480). Lippincott-Raven.	Pocock, S. J. (2005). Current issues in the design and interpretation of clinical trials. BMJ, 330(7500), 1118–1121.	Morgenstern, H. (1995). Ecologic studies in epidemiology: concepts, principles, and methods. Annual Review of Public Health, 16(1), 61–81.
Rööpnimetused	adaptive ecologic study, sequential ecological study, adaptive population-level design, adaptive group-level study	adaptive trial, adaptive design, response-adaptive randomization, RAR	aggregate study, correlational study, ecological correlation study, population-level study
Seotud	3	1	5
Kokkuvõte	An adaptive ecological study is an observational epidemiological design in which the unit of analysis is a group or population (e.g., a region, country, or community) rather than an individual. It extends the classical ecological study by incorporating pre-specified interim decision rules that allow modifications — such as changes in geographic unit, time window, or exposure categorisation — as data accumulate, while preserving overall inferential validity. The design is used to explore population-level associations between aggregate exposures and aggregate outcomes.	An adaptive trial design allows pre-specified modifications to the trial based on interim data—such as sample size re-estimation, stopping for futility or efficacy, dropping ineffective arms, or shifting randomization ratios toward better-performing treatments. Developed systematically in the 1990s–2000s by statisticians like Pocock and Jennison, and formalized by the FDA in 2019, adaptive designs accelerate drug development, reduce exposure to ineffective treatments, and improve efficiency without inflating false-positive rates when properly executed.	An ecological study is an observational epidemiological design in which the unit of analysis is a group or population — a country, region, city, or time period — rather than an individual. Exposures and outcomes are measured as aggregates (rates, proportions, or means) and then correlated across groups to generate or evaluate hypotheses about population-level associations between risk factors and disease.