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| Adaptiv økologisk undersøgelse× | Ekologisk studie× | |
|---|---|---|
| Fagområde | Epidemiologi | Epidemiologi |
| Familie | Process / pipeline | Process / pipeline |
| Oprindelsesår≠ | 1990s–2000s (adaptive extensions of classical ecological designs) | 19th century (Snow 1854); formalised mid-20th century |
| Ophavsperson≠ | Building on classical ecological epidemiology (Durkheim, Snow, Morgenstern); adaptive extensions developed in late 20th–early 21st century methodological literature | Various; foundational work by John Snow (1854) and systematised in modern form by Brian MacMahon and colleagues |
| Type≠ | Observational study design | Observational epidemiological study |
| Oprindelig kilde≠ | Morgenstern, H. (1998). Ecologic studies. In K. J. Rothman & S. Greenland (Eds.), Modern Epidemiology (2nd ed., pp. 459–480). Lippincott-Raven. link ↗ | Morgenstern, H. (1995). Ecologic studies in epidemiology: concepts, principles, and methods. Annual Review of Public Health, 16(1), 61–81. DOI ↗ |
| Aliasser | adaptive ecologic study, sequential ecological study, adaptive population-level design, adaptive group-level study | aggregate study, correlational study, ecological correlation study, population-level study |
| Relaterede≠ | 3 | 5 |
| Resumé≠ | 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 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. |
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