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Introduction: Optimal glycaemic control is often a challenge in children and adolescents with type 1 diabetes (T1D). Implementation of patient, clinician or organisation-targeted quality improvement (QI) strategies has been proven to be beneficial in terms of improving glycaemic outcomes in adults living with diabetes. This review aims to assess the effectiveness of such QI interventions in improving glycaemic control, care delivery, and screening rates in children and adolescents with T1D. Methods and analysis: MEDLINE, EMBASE, CINAHL and Cochrane CENTRAL databases will be searched for relevant studies up to January 2021. Trial registries, ClinicalTrials.gov and ICTRP, will also be explored for any ongoing trials of relevance. We will include trials which examine QI strategies as defined by a modified version of the Cochrane Effective Practice and Organisation of Care 2015 Taxonomy in children ( Dissemination: The results of this review will be disseminated through peer-reviewed publication in order to inform invested partners (e.g., Paediatric Endocrinologists) on the potential of QI strategies to improve glycaemic management and other related health outcomes in children with T1D, thereby guiding best practices in the outpatient management of the disorder. PROSPERO registration number: CRD42021233974 (28/02/2021).

Background Achilles tendon xanthoma (ATX) results from tendon thickening and subclinical inflammation triggered by hypercholesterolemia, and is associated with more severe coronary artery disease and a higher risk of cardiovascular events. The ability to detect ATX by clinical examination is limited, and diagnostic imaging, for instance, using ultrasonography or magnetic resonance imagine (MRI), may improve the identification of ATX. However, the accuracy of ultrasound (US) imaging or MRI in identifying ATX in people with familial hypercholesterolemia (FH) has not been systematically reviewed. Objective The objective of this study was to systematically review the accuracy of US imaging or MRI in diagnosing ATX in individuals with FH. Methods Searches in Medline, Embase, Cochrane Central, and Cochrane Database of Systematic Reviews on the Ovid platform from inception to April 15, 2018, were conducted to identify articles. Any study design that included US imaging or MRI of Achilles tendon xanthoma in people with FH, and that included a control group of non-FH participants with either normal or symptomatic Achilles tendons, was considered eligible. All of the included studies were reviewed according to the STAndards for the Reporting of Diagnostic accuracy (STARD) method. A qualitative synthesis of the included studies was undertaken. Results Fifteen studies with 699 patients with FH and 868 non-FH participants were included. Among the non-FH participants, 26 individuals had other documented Achilles tendon pathology (trauma or overuse). Evaluation with the STARD checklist suggested that the quality of evidence was low. US imaging and MRI may have acceptable sensitivity in detecting tendon thickening associated with ATX. There is a wide range in the suggested thickness thresholds and in the estimates of diagnostic accuracy. Conclusions A small amount of low-quality evidence suggests that ultrasonography or MRI can improve clinicians' accuracy in identifying ATX in people with FH, thereby identifying those with more severe coronary artery disease.