NEWS2 Versus PSI in CAP
Abstract Background: In the UK, National Early Warning Score (NEWS2) has been in frequent use to precisely categorize patients according to severity and as an aid in deciding the level of management. NEWS2 is an excellent tool that does not need any laboratory investigation to mark. With Pneumonia Severity Index (PSI), however, many variables are taken into account i.e. clinical, laboratory and imaging to score the patients into classes of severity. Our aim is to compare NEWS2 with PSI to foresee in-hospital mortality in patients with community acquired pneumonia (CAP).Methods: A cross-sectional analytical study was conducted on a sample of 116 Pakistanis presenting with CAP. We performed statistical analyses on SPSS version 22.0 and observed frequencies of various categorized variables. ROC curve for estimating AUC and sensitivity analyses were performed to evaluate predictive validity of each severity score in relation to in-hospital outcome.Results: There were 45 (38.8%) mortalities during the hospital stay. Sensitivity of NEWS2 in terms of mortality prediction was 97.8% but specificity was only 15.5% whereas PSI showed worse sensitivity (68.9%) but better specificity (50.7%).Conclusion: NEWS2 is much more sensitive than specific for prediction of mortality among CAP patients as compared to PSI.