Diabetes is emerging as a risk factor for coronavirus disease (COVID)-19 prognosis. However, contradictory findings have been reported regarding the impact of glycaemic control on COVID-19 outcome. The aim of this meta-analysis was to explore the impact of hospital pre-admission or at-admission values of HbA1c on COVID-19 mortality or worsening in patients with diabetes.

中文翻译：

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Covid-19 感染前 HbA1c 水平升高会增加死亡风险：系统回顾和荟萃分析

糖尿病正在成为冠状病毒病 (COVID)-19 预后的危险因素。然而，关于血糖控制对 COVID-19 结果的影响，报告了相互矛盾的发现。这项荟萃分析的目的是探讨入院前或入院时 HbA1c 值对糖尿病患者 COVID-19 死亡率或恶化的影响。