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Objective: The aim of this scoping review is to synthesize the existing body of studies that use nudge strategy and focus on behavioral practices suitable for prevention and control of neglected tropical diseases. The review will map the existing literature, identify gaps in knowledge, and provide a series of recommendations for future research., Introduction: There is a well-established body of knowledge related to "nudging," a strategy that uses subtle stimuli to direct people's behavior within public health interventions, with the aim of changing behaviors to reduce the prevalence of non-communicable diseases. Recently, interventions to promote prevention and control of neglected tropical diseases have included nudging as a strategy for altering behavior. However, these interventions not been synthesized and present the opportunity for a scoping review., Inclusion Criteria: Eligible studies are those that include nudge strategies aimed at changing behavior to prevent and control neglected tropical diseases. All types of behavioral practices suitable for targeting neglected tropical diseases (e.g. handwashing behaviors) will be considered, not exclusively focusing on a specific type or group of neglected tropical diseases. The nudge strategy must be described in full, without restrictions to the study design. The context or population will be limited to low- and middle-income countries., Methods: A comprehensive search will be performed in the following databases: MEDLINE, PsycINFO, and Embase (Ovid), Web of Science Core Collection, CINAHL, ERIC, and EconLit (EBSCO), as well as registered trials and reviews in CENTRAL and PROSPERO to identify ongoing or unpublished studies. Titles will be screened by one reviewer, and non-eligible studies excluded. Two reviewers (SB and FVV) will screen abstracts independently. Eligible studies will be selected through a questionnaire that specifies the inclusion criteria. Papers selected for inclusion will be subject to data extraction using a tool designed by one review author and agreed upon by the other review authors. Data will be presented in a table and other conceptual styles., Competing Interests: The authors declare no conflict of interest., (Copyright © 2020 JBI.)

Background: Nudging, a strategy that uses subtle stimuli to direct people's behavior, has recently been included as an effective and low-cost behavior change strategy in low- and middle- income countries (LMIC), targeting behavior-based prevention and control of neglected tropical diseases (NTDs). The present scoping review aims to provide a timely overview of how nudge interventions have been applied within this field. In addition, the review proposes a framework for the ethical consideration of nudges for NTD prevention and control, or more broadly global health promotion. Methods: A comprehensive search was performed in several databases: MEDLINE, PsycINFO, and Embase (Ovid), Web of Science Core Collection, CINAHL, ERIC and Econ.Lit (EBSCO), as well as registered trials and reviews in CENTRAL and PROSPERO to identify ongoing or unpublished studies. Additionally, studies were included through a handpicked search on websites of governmental nudge units and global health or development organizations. Results: This scoping review identified 33 relevant studies, with only two studies targeting NTDs in particular, resulting in a total of 67 nudge strategies. Most nudges targeted handwashing behavior and were focused on general health practices rather than targeting a specific disease in particular. The most common nudge strategies were those targeting decision assistance, such as facilitating commitment and reminder actions. The majority of nudges were of moderate to high ethical standards, with the highest standards being those that had the most immediate and significant health benefits, and those implemented by agents in a trust relationship with the target audience. Conclusion: Three key recommendations should inform research investigating nudge strategies in global health promotion in general. Firstly, future efforts should investigate the different opportunities that nudges present for targeting NTDs in particular, rather than relying solely on integrated health promotion approaches. Secondly, to apply robust study designs including rigorous process and impact evaluation which allow for a better understanding of 'what works' and 'how it works'. Finally, to consider the ethical implications of implementing nudge strategies, specifically in LMIC. Author summary: Behavior is at the core of neglected tropical disease (NTD) prevention and control, certainly within low-, and middle- income countries (LMIC) where resources are often limited. Therefore, strategies to promote behavior change should be included and investigated in future efforts. Nudging, a low-cost strategy that subtly directs people towards positive behavioral choices, has recently gained attention in global health promotion. Nudge strategies have been applied to a wide range of health-promoting behaviors such as handwashing. To understand which strategies were used, where and how these were applied, and whether these were ethically informed and implemented, we undertook a comprehensive review of the available sources. This resulted in 33 included studies, with a total of 67 nudge strategies for behavior-based prevention and control of NTDs in LMIC. Only two studies targeted NTDs in particular, the other 31 included studies were focused on more general health promoting behaviors, with the majority targeting handwashing with soap. The most common nudge strategies were those targeting decision assistance, such as fostering commitment and reminder actions. In general, the ethical assessment presented favorable results. We identified the need for robust study designs to better understand how nudges can be implemented in the future. [ABSTRACT FROM AUTHOR]