comparison

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comparison

the basis of analytical epidemiology, the statistical comparison between groups.

comparison groups
the groups between which a statistical comparison is to be made.
comparison population
the population in which a comparison between groups is to be conducted. All of the groups to be used comprise the population.
References in periodicals archive ?
6 million births from 1978 through 2002 in New York State (excluding New York City) were assigned to the comparison population.
Sufficient comparison population sample size to provide a stable target growth rate computation.
While other participating practices did achieve lower Medicare spending growth rates than comparison populations in their local markets, their savings did not meet the 2% threshold to share in the Medicare savings, Mr.
As presented in Table 1, the demographic profiles of both the PPCP participants and the comparison population indicated a high degree of similarity.
Without a comparison population, the investigators cannot even claim that the drug works differently in African Americans.
3) Contrary to the expectation that nonoxynol-9 products might reduce HIV transmission, one study demonstrated that HIV incidence was greater in a high-risk population using nonoxynol-9 than in a comparison population using a placebo.

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