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Sampling and Assignment Mechanisms in Experiments, Surveys and Observational Studies, Correspondent Paper

T. M. F. Smith and R. A. Sugden
International Statistical Review / Revue Internationale de Statistique
Vol. 56, No. 2 (Aug., 1988), pp. 165-180
DOI: 10.2307/1403640
Stable URL: http://www.jstor.org/stable/1403640
Page Count: 16
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Sampling and Assignment Mechanisms in Experiments, Surveys and Observational Studies, Correspondent Paper
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Abstract

A general framework is given for examining the role of mechanisms for treatment assignment and unit selection in experiments, surveys and observational studies. Conditions are established under which these mechanisms can be ignored for model-based inference. Examples are presented to show how inference can incorporate the mechanisms when the conditions do not hold. /// Un cadre général est donné pour l'examen de rôle des mécanismes de selection d'unités et d'allocations de traitements dans les experiences, enquêtes et études d'observation. Nous donnons des conditions impliquant que ces mécanismes peuvent être ignorés pour des inférences fondées sur les modèls. Nous montrons dans les examples comment des inférences peuvent tenir compte des mécanismes quand ces conditions ne sont pas satisfaites.

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