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TY - JOUR AU - El Feky, Adel AU - Gillies, Katie AU - Gardner, Heidi AU - Fraser, Cynthia AU - Treweek, Shaun PY - 2018 DA - 2018/02/20 TI - A protocol for a systematic review of non-randomised evaluations of strategies to increase participant retention to randomised controlled trials JO - Systematic Reviews SP - 30 VL - 7 IS - 1 AB - Randomised control trials are regarded as the gold standard for evaluating the effectiveness and efficacy of healthcare interventions with thousands of trials published every year. Despite significant investment in infrastructure, a staggering number of clinical trials continue to face challenges with retention. Dropouts could lead to negative consequences—from lengthy delays to missing data that can undermine the results and integrity of the trial. SN - 2046-4053 UR - https://doi.org/10.1186/s13643-018-0696-7 DO - 10.1186/s13643-018-0696-7 ID - El Feky2018 ER -