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The state of asthma epidemiology: an overview of systematic reviews and their quality

机译：哮喘流行病学状况：系统评价及其质量概述

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Background Recently, we have published an overview of systematic reviews in allergy epidemiology and identified asthma as the most commonly reviewed allergic disease. Building on this work, we aimed to investigate the quality of systematic reviews in asthma using the AMSTAR checklist and to provide a reference for future, more in-depth assessment of the extent of previous knowledge. Methods We included all 307 systematic reviews indexed with asthma, including occupational asthma, and/or wheeze from our previous search in PubMed and EMBASE up to December 2014 for systematic reviews on epidemiological research on allergic diseases. Topics of the included systematic reviews were indexed and we applied the AMSTAR checklist for methodological quality to all. Statistical analyses include description of lower and upper bounds of AMSTAR scores and variation across publication time and topics. Results Of 43 topics catalogued, family history, birth weight, and feeding of formula were only covered once in systematic reviews published from 2011 onwards. Overall, at least one meta-analysis was conducted for all topics except for “social determinants”, “perinatal”, “birth weight”, and “climate”. AMSTAR quality scores were significantly higher in more recently published systematic reviews, in those with meta-analysis, and in Cochrane reviews. There was evidence of variation of quality across topics even, after accounting for these characteristics. Genetic factors in asthma development were often covered by systematic reviews with some evidence of unsubstantiated updates or repetition. Conclusions We present a comprehensive overview with an indexed database of published systematic reviews in asthma epidemiology including quality scores. We highlight some topics including active smoking and pets, which should be considered for future systematic reviews. We propose that our search strategy and database could be a basis for topic-specific overviews of systematic reviews in asthma epidemiology.
机译：背景技术最近，我们发表了过敏性流行病学系统综述的概述，并将哮喘确定为最常被综述的过敏性疾病。在这项工作的基础上，我们旨在调查使用AMSTAR清单进行的哮喘系统评价的质量，并为将来更深入地评估以前的知识水平提供参考。方法我们纳入了直到2014年12月为止我们在PubMed和EMBASE之前的搜索中对包括职业性哮喘和/或喘息在内的所有307篇纳入哮喘的系统评价，以系统评价关于过敏性疾病的流行病学研究。对纳入的系统评价的主题进行索引，我们将AMSTAR清单用于方法学质量。统计分析包括AMSTAR分数的上下限以及出版时间和主题之间的差异。结果从2011年开始，系统分类的综述中仅对分类的43个主题，家族史，出生体重和配方食品进行了覆盖。总体而言，除“社会决定因素”，“围产期”，“出生体重”和“气候”外，针对所有主题至少进行了一次荟萃分析。在最近发表的系统评价，荟萃分析和Cochrane评价中，AMSTAR的质量得分明显更高。即使考虑了这些特征，也有证据表明各个主题的质量存在差异。哮喘发展中的遗传因素通常被系统综述所覆盖，并有一些证据不足的更新或重复证据。结论我们提供了一个综合的综述，包括一个索引数据库，该数据库包含已发表的哮喘流行病学系统评价，包括质量得分。我们重点介绍了一些主题，包括主动吸烟和养宠物，这些应该在以后的系统评价中加以考虑。我们建议，我们的搜索策略和数据库可以作为哮喘流行病学系统评价的特定主题概述的基础。

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