In resource-limited settings, mass food fortification is a common strategy to ensure the population consumes appropriate quantities of essential micronutrients. Food and government organizations in these settings, however, lack tools to monitor the quality and compliance of fortified products and their efficacy to enhance nutrient status. The World Health Organization has developed general guidelines known as ASSURED (Affordable, Sensitive, Specific, User-friendly, Rapid and Robust, Equipment-free, and Deliverable to end-users) to aid the development of useful diagnostic tools for these settings. These guidelines assume performance aspects such as sufficient accuracy, reliability, and validity. The purpose of this systematic narrative review is to examine the micronutrient sensor literature on its adherence towards the ASSURED criteria along with accuracy, reliability, and validation when developing micronutrient sensors for resource-limited settings. Keyword searches were conducted in three databases: Web of Science, PubMed, and Scopus and were based on 6-point inclusion criteria. A 16-question quality assessment tool was developed to determine the adherence towards quality and performance criteria. Of the 2,365 retrieved studies, 42 sensors were included based on inclusion/exclusion criteria. Results showed that improvements to the current sensor design are necessary, especially their affordability, user-friendliness, robustness, equipment-free, and deliverability within the ASSURED criteria, and accuracy and validity of the additional criteria to be useful in resource-limited settings. Although it requires further validation, the 16-question quality assessment tool can be used as a guide in the development of sensors for resource-limited settings.

中文翻译：

---

在资源有限的环境中对食物基质的微量营养素传感器进行评估：系统叙述性评论

在资源有限的环境中，大规模食品强化是确保人们摄入适量必需微量营养素的常见策略。然而，这些环境中的食品和政府组织缺乏监测强化产品的质量和合规性及其增强营养状况的功效的工具。世界卫生组织制定了称为“保证”（价格合理、敏感、具体、用户友好、快速且稳健、无设备和可交付给最终用户）的一般指南，以帮助开发适用于这些环境的有用诊断工具。这些指南假定了性能方面，例如足够的准确性、可靠性和有效性。本系统叙述性综述的目的是检查微量营养素传感器文献，了解其在为资源有限的环境开发微量营养素传感器时是否符合保证标准以及准确性、可靠性和验证。在三个数据库中进行了关键字搜索：Web of Science、PubMed 和 Scopus，并基于 6 点纳入标准。开发了一个包含 16 个问题的质量评估工具，以确定对质量和性能标准的遵守情况。在检索到的 2,365 项研究中，根据纳入/排除标准纳入了 42 个传感器。结果表明，对当前传感器设计的改进是必要的，尤其是它们的可负担性、用户友好性、鲁棒性、免设备和符合 ASSURED 标准的可交付性，在资源有限的环境中有用的附加标准的准确性和有效性。尽管需要进一步验证，但 16 个问题的质量评估工具可用作资源有限环境传感器开发的指南。