Abstract:

Objective: To predict SARS-CoV-2 PCR positivity on the basis of symptoms and contact history of individuals who attend emergency department Methods: The data for the study which was of a prospective-methodological type were collected from 503 patients who attended emergency department of a hospital with suspected Covid-19 between 02 January - 15 March 2021 and were given Polymerase chain reaction (PCR) test. Covid 19 Visual Triage Scale (VTS) and questionnaire were used for collecting data. Distribution of socio-demographic data was interpreted in frequency, percentage. Independent samples t-test and chi-square test were used to compare quantitative data. Cut-off value of the scale was determined. In the study, sensitivity and specificity of the scale were tested through scoring adopted based on the real time PCR test result. Results: According to the PCR test, 67% of the patients were tested negative while 33% of them were positive. According to Covid-19 VTS, 55% of the patients were found to be negative while 45% were found positive. Validation of scale resulted in 0.65 AUC with a 45% sensitivity and 82% specificity using a cut-off value >4. In its comparison with PCR test, the scale was found to detect 93 real positive and 204 real negative patients. Self-reported fever, cough, sore throat, loss of taste and smell and history of contact with a confirmed Covid-19 case were found to be strong predictors for detecting Covid-19(p<.05). Conclusions: In the study, sensitivity and specificity of Covid-19 VTS were found to be low. However, for Covid-19 and future pandemics, it is supposed to be useful in sorting patients during the early stages of the pandemic where testing facilities are limited and during the times of fluctuation.

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