Since its introduction to the human population in December 2019, Coronavirus Disease 2019 (COVID-19) continues to spread worldwide. More than 80% of patients with COVID19 present with influenza-like illness (ILI) or mild pneumonia [1], most of these patients are not hospitalized. Real time reverse transcriptase-polymerase chain reaction (RT-PCR) is used to detect the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from respiratory samples [2]. We aim to compare the symptoms of patients with positive and negative SARS-CoV-2 RT-PCR results and to determine the sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) for each of these symptoms in regard to SARS-CoV-2 RT-PCR.

中文翻译：

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嗅觉障碍和味觉障碍对门诊 COVID-19 诊断的贡献

自 2019 年 12 月引入人类以来，2019 年冠状病毒病 (COVID-19) 继续在全球蔓延。超过 80% 的 COVID19 患者出现流感样疾病 (ILI) 或轻度肺炎 [1]，其中大多数患者没有住院。实时逆转录酶-聚合酶链反应 (RT-PCR) 用于检测呼吸道样本中的严重急性呼吸综合征冠状病毒 2 (SARS-CoV-2) [2]。我们旨在比较具有阳性和阴性 SARS-CoV-2 RT-PCR 结果的患者的症状，并确定这些症状中每种症状的敏感性、特异性、阳性预测值 (PPV) 和阴性预测值 (NPV) SARS-CoV-2 RT-PCR。