Browsing BioMed Central høstingsarkiv by Author "Karevold, Evalill"
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Gustavson, Kristin; von Soest, Tilmann; Karevold, Evalill; Røysamb, Espen (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)Background Attrition is one of the major methodological problems in longitudinal studies. It can deteriorate generalizability of findings if participants who stay in a study differ from those who drop out. ...