Validation of the Covid-19 Screening Tool and Clinical-Epidemiological Characteristics of Confirmed Covid-19 Patients at Fauji Foundation Hospital Rawalpindi
Validation of the COVID-19 Screening Tool
Keywords:Case Definition, COVID-19 Screening, Validation
Objectives: To assess clinical and epidemiological features of COVID-19 patients at Fauji Foundation Hospital and to validate COVID-19 case definition devised by WHO.
Study design: Cross Sectional Validation.
Study Place: Fauji Foundation Hospital Rawalpindi.
Study Duration: June 2020 to January 2021.
Sample Technique & Size: Purposive sampling of 836 COVID-19 suspected cases as per definition. Methodology: Clinical and epidemiological features of COVID-19 positive patients were assessed along with validation of case definition of COVID -19.
Results: Four hundred and ninety-two (58.9%) of study population were females, 507(60.7%) were non health care workers. Hypertension and diabetes were a comorbidity in 184(22%) and 507(60.7%) of patients respectively. The WHO questionnaire validation revealed 63.6% sensitivity and specificity of 56.6%. After screening , positive predictive value of 75.7% and negative predictive value of 42.2% was attributed to the screening tool.
Conclusion: Keeping in view the high prevalence as well as variety of clinical symptoms of COVID 19 and its unpredictable fatality behaviour in Pakistani population; the WHO tool left much to be changed in case definition to improve the sensitivity and specificity besides predictive value of its recommended current screening tool.