ecologic study

ecologic stud·y

epidemiologic study in which the units of analysis are populations or groups of people rather than individual people.

e·co·log·i·c study

(ēk'ŏ-loj'ik stŭd'ē)
Epidemiologic study in which the units of analysis are populations or groups of people rather than individual people.
Mentioned in ?
References in periodicals archive ?
Our analyses suggest that an ecologic study on lung cancer and radon exposure in BC might reach divergent conclusions depending on whether the radon potential map or the radon observations were used for exposure assessment.
During the ecologic study, 126 rodents were captured: 68 (53.
Nevertheless, the hypotheses generated from this ecologic study need further confirmation by subsequent analytic studies.
Given the methodological aspects of ecologic study design, studies of this nature (eg, environmental contaminant and disease outcome) should be interpreted with caution.
Lieberman was found by the National Institute of Health (NIH) in October of 2006 to contain several serious flaws that were "judged to reduce the usefulness of an ecologic study design using the VSD (Vaccine Safety Database) to address the potential association between thimerosal and the risk of Autism Spectrum Disorders.
Streptococcal resistance is directly associated with antibiotic use, a multinational ecologic study shows.
Hillier and her associates also conducted an ecologic study of 2,110 individuals, which showed no correlation between hip fracture among residents of areas with highly fluoridated water and those living elsewhere.
3) study utilized TABULAR DATA OMITTED the ecologic study design to investigate the relationship between exposure to air emissions produced by the petroleum and chemical industries and average annual cancer incidence among residents of Contra Costa County.
Their ecologic study design cannot be used to determine causation, and their recommendation to change lead screening strategies based on their study seems premature.
We cannot determine a causal relationship because of the nature of the ecologic study that we used in this research.
We did not use an ecologic study design in our analysis.

Full browser ?