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    Anchorage Community Survey 2007 Survey Sampling Design: Power and Sample Size

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    Author
    Evans, Shel Llee
    Keyword
    Anchorage, AK
    Anchorage Community Survey
    community survey
    research methods
    Metadata
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    URI
    http://hdl.handle.net/11122/4176
    Abstract
    This working paper documents the power analysis, literature review, and precision considerations contemplated in designing the Anchorage Community Survey’s (ACS) 2007 sampling design. The ACS will obtain at least 30 completed surveys from individuals in each of the 55 census tracts that make up the Anchorage Municipality, allowing us to discern a fairly small effect size of 0.30 with our smallest anticipated intraclass correlation and a moderate effect size of 0.40 with our largest anticipated intraclass correlation, both at 0.80 power level. This cluster sample size and number of clusters should yield sufficient precision to allow good estimation of variance components and standard errors, acceptable reliability estimates, and reasonable aggregated measures of constructed neighborhood variables from individual survey item responses.
    Table of Contents
    Abstract / Introduction / Number of clusters (J) = 55 / Cluster Size (n) = 30 / Intraclass correlation (ρ)=.10 to .20 / Effect size (δ)=.30 or greater / Power Graphs / Support from the Literature / A Note on Precision / References
    Date
    2006-12
    Source
    UAAJC Working Papers
    Publisher
    University of Alaska Anchorage Justice Center
    Type
    Working Paper
    Citation
    Evans, Shel Llee. (2006). "Anchorage Community Survey 2007 Survey Sampling Design: Power and Sample Size." UAAJC Working Paper 4 (Dec 2006).
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    UAAJC Working Papers

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