Browsing Institutt for allmenn- og samfunnsmedisin by Author "Thelle, Dag"

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  • The Oslo Health Study: The impact of self-selection in a large, population-based survey 
    Søgaard, Anne J; Selmer, Randi; Bjertness, Espen; Thelle, Dag (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2004)
    Background Research on health equity which mainly utilises population-based surveys, may be hampered by serious selection bias due to a considerable number of invitees declining to participate. Sufficient ...