Abstract：
In the West, National Early Warning Score 2 (NEWS2) is commonly applied to predict the severity of illness using only bedside variables unlike the extensive Pneumonia Severity Index (PSI). The objective of this study was to compare these scores as mortality predictors in patients admitted with community acquired pneumonia (CAP). This cross-sectional study was conducted in Jinnah Postgraduate Medical Centre, Karachi, Pakistan, for six months in 2020 on 116 patients presenting with CAP. Cases of aspiration pneumonia, hospital acquired pneumonia, pulmonary tuberculosis, pulmonary embolism, and pulmonary oedema were excluded. In-hospital mortality was taken as the outcome of this study. The mean age of the participants was 46.9±20.5 years. The in-hospital mortalities were 45(38.8%). NEWS2 was 97.8% sensitive but only 15.5% specific in predicting the outcome, whereas PSI was less sensitive (68.9%) but more specific (50.7%), which showed that in comparison with PSI, NEWS2 is a more sensitive mortality predicting score among hospitalised CAP patients.
摘要：
在西方,与广泛的肺炎严重程度指数（PSI）不同，国家早期预警评分2（NEWS2）通常仅使用床旁变量来预测疾病的严重程度。这项研究的目的是比较这些得分作为社区获得性肺炎（CAP）患者的死亡率预测因子。这项横断面研究是在Jinnah研究生医学中心进行的，卡拉奇,巴基斯坦,2020年对116例CAP患者进行了6个月的随访。吸入性肺炎病例，医院获得性肺炎,肺结核,肺栓塞,排除肺水肿。院内死亡率作为这项研究的结果。参与者的平均年龄为46.9±20.5岁。住院死亡率为45例（38.8%）。NEWS2在预测结果方面的敏感性为97.8％，但特异性仅为15.5％。而PSI较不敏感(68.9%)但更具体(50.7%)，这表明与PSI相比，NEWS2是住院CAP患者中更敏感的死亡率预测评分。
