Visualitza per autor "European Kidscreen Group"

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  • Berra Ramos, Silvina del Valle; Ravens-Sieberer, Ulrike; Erhart, Michael; Tebé, Cristian; Bisegger, Corinna; Duer, Wolfgang; Ruden, Ursula von; Herdman, Michael; Alonso Caballero, Jordi; Rajmil Rajmil, Luis Alberto; European Kidscreen Group (BioMed Central, 2007)
    Background: The objective of the present study was to compare three different sampling and questionnaire administration methods used in the international KIDSCREEN study in terms of participation, response rates, and ...