Descriptive Methods For Evaluation Of State-Based Intervention Programs  

Oleh:

Davis, William W. ; Graubard, Barry I. ; Hartman, Anne M. ; Stillman, Frances A.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Evaluation Review vol. 27 no. 5 (Oct. 2003), page 506-534.
Topik: bootstrap; locallyweighted regression; random effect; pooled cross-sectional time series
Fulltext: 506.pdf (507.8KB)

Isi artikel

In this article, the authors discuss program evaluation of intervention studies when the outcome of interest is collected routinelyat equallyspaced intervals of time. Theyillustr ate concepts using data from the American Stop Smoking Intervention Study, where the outcome is state per capita tobacco consumption. States differ widelyin mean tobacco consumption, and these differences should be accounted for in the analysis. A large difference in the variance of the intervention effect maybe obtained depending on whether the variation in the between-state effects are considered. The confidence limits obtained byignoring between-state effects are too optimistic in many cases.

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