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Background The European Academy of Allergy and Clinical Immunology is in the process of developing its Guideline for Food Allergy and Anaphylaxis, and this systematic review is one of seven inter-linked evidence syntheses that are being undertaken in order to provide a state-of-the-art synopsis of the current evidence base in relation to epidemiology, prevention, diagnosis and clinical management and impact on quality of life, which will be used to inform clinical recommendations. The aims of this systematic review will be to understand and describe the epidemiology of anaphylaxis, i.e. frequency, risk factors and outcomes of anaphylaxis, and describe how these characteristics vary by person, place and time. Methods A highly sensitive search strategy has been designed to retrieve all articles combining the concepts of anaphylaxis and epidemiology from electronic bibliographic databases. Discussion This review will aim to provide some estimates of the incidence and prevalence of anaphylaxis in Europe. The occurrence of anaphylaxis can have a profound effect on the quality of life of the sufferer and their family. Estimates of disease frequency will help us to ascertain the burden of anaphylaxis and provide useful comparators for management strategies. BioMed Central open access

Search Strategy. (PDF 57 kb)

PRISMA-P 2015 Checklist. (DOCX 37 kb)

PRISMA-P 2015 Checklist. (DOCX 37 kb)

Table S2. Full study characteristics. (PDF 652 kb)

Background: There is increasing recognition in Canada and globally that a substantial proportion of health care delivered is inappropriate as evidenced by (1) harmful and/or ineffective practices being overused, (2) effective clinical practices being underused, and (3) other clinical practices being misused. Inappropriate health care leads to negative patient experiences, poor health outcomes, and inefficient use of scarce health care resources. The purpose of this study is to conduct a systematic review of inappropriate health care in Canada. Our specific objectives are to (1) systematically search and critically review published and grey literature for studies on inappropriate health care in Canada; (2) estimate the nature and magnitude of inappropriate health care in Canada and its provincial and territorial jurisdictions. Methods: We will include all quantitative study designs reporting objective or subjective measurements of inappropriate health care in Canada over the last 10 years. We will search the following online databases: MEDLINE, Cochrane Central Register of Controlled Trials, EconLit, and ISI-Web of Knowledge, which contains Web of Science Core Collection-Citation Indexes, Science Citation Index Expanded, Conference Proceedings Citation Index-Science, and Conference Proceedings Citation Index-Social Science & Humanities. We will also search grey literature sources to identify provincial and national audits of inappropriate health care. Two authors will independently screen, assess data quality, and extract data for synthesis. Study findings will be synthesized narratively. We will organize our data into three care categorizations: preventive care, acute care, and chronic care. We will provide a compendium of inappropriate health care for each care category for Canada and each Canadian province and territory, where sufficient data exists, by calculating (1) overall medians of underuse, overuse, and misuse of clinical practices and (2) the range of medians of underuse, overuse, and misuse for each clinical practice investigated. Discussion: This review will result in the first-ever evidence-based compendium of inappropriate health care in Canada. We will also develop detailed reports of inappropriate health care for each Canadian province and territory. Systematic review registration: PROSPERO CRD42018093495

Search Strategy. (PDF 57 kb)