Impact and Costs of Incentives to Reduce Attrition in Online Trials: Two Randomized Controlled Trials by Khadjesari, Zarnie, Murray, Elizabeth, Kalaitzaki, Eleftheria, White, Ian R, McCambridge, Jim, Thompson, Simon G, Wallace, Paul, Godfrey, Christine

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Methodological Challenges in Online Trials by Murray, Elizabeth, Khadjesari, Zarnie, White, Ian R, Kalaitzaki, Eleftheria, Godfrey, Christine, McCambridge, Jim, Thompson, Simon G, Wallace, Paul

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Impact of Length or Relevance of Questionnaires on Attrition in Online Trials: Randomized Controlled Trial by McCambridge, Jim, Kalaitzaki, Eleftheria, White, Ian R, Khadjesari, Zarnie, Murray, Elizabeth, Linke, Stuart, Thompson, Simon G, Godfrey, Christine, Wallace, Paul

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The MATISSE study: a randomised trial of group art therapy for people with schizophrenia by Crawford Mike J, Killaspy Helen, Kalaitzaki Eleftheria, Barrett Barbara, Byford Sarah, Patterson Sue, Soteriou Tony, O'Neill Francis A, Clayton Katie, Maratos Anna, Barnes Thomas R, Osborn David, Johnson Tony, King Michael, Tyrer Peter, Waller Diana

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