Impact and Costs of Incentives to Reduce Attrition in Online Trials: Two Randomized Controlled Trials

• Główni autorzy: Khadjesari, Zarnie (Autor), Murray, Elizabeth (Autor), Kalaitzaki, Eleftheria (Autor), White, Ian R (Autor), McCambridge, Jim (Autor), Thompson, Simon G (Autor), Wallace, Paul (Autor), Godfrey, Christine (Autor)
• Format: Książka
• Wydane: JMIR Publications, 2011-03-01T00:00:00Z.
• Hasła przedmiotowe: article
• Dostęp online: Connect to this object online.

BackgroundAttrition from follow-up is a major methodological challenge in randomized trials. Incentives are known to improve response rates in cross-sectional postal and online surveys, yet few studies have investigated whether they can reduce attrition from follow-up in online trials, which are par...