Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infection disease that is deadly if left untreated. Identification of potential risk factors with prognosis value may help to focus clinical management and reduce case fatality. However, information about these factors is conflicting and scattered. In this study, documents on SFTS were collected by searching PubMed, Web of Science, Chinese National Knowledge Infrastructure (CNKI) and Chinese Wan Fang Database through 12 January 2021. Meta-analysis was performed by using Stata and Review Manage software. 29 studies were included, involving 3011 participants with 38 clinical symptoms. The following factors were strongly (OR>5) and significantly (P-value<0.05) associated with mortality: hematemesis (OR=13.73), slurred speech (OR=5.05), disturbance of consciousness (OR=9.20), coma (OR=47.84), disseminated intravascular coagulation (OR=11.79), multiple organ dysfunction (OR=21.30), shock (OR=8.20) and acute kidney injury (OR=6.22). Non-specific symptoms, underlying diseases, respiratory symptoms and gastrointestinal symptoms were not associated with mortality of SFTS patients. Neurological symptoms and severe complications significantly increasing the death risk of SFTS cases can be identified by medical staff in resource-constrained settings and should be considered as core factors in future researchers that aim at improving the prognosis of SFTS patients.
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