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Internal validation showed an AUC of 0.836. A cut-off of ≥ 1.5 points was associated with a 92.6% sensitivity and 99.5% negative predictive value (NPV) for COVID-19. From the largest prospective outpatient cohort of suspected COVID-19 we define the clinical factors predictive of a positive SARS-CoV-2 test. The subsequent clinical decision rule, COVID-MATCH65, has a high sensitivity and NPV for SARS-CoV-2 and can be employed in the pandemic, adjusted for disease prevalence, to aid COVID-19 risk-assessment and vital testing resource alloca

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Installing a cat flap your home is an excellent step for any pet owner. There are numerous options for you, whether your cat is getting older and requires additional security or if you have kittens who need to be checked. Installing a cat flap can be intimidating for people who aren't professionals, but, with the right instructions, it's easy to complete. Preparation, planning and precision are the keys. Choose the Right Door or Window There are many different types of cat flaps, including some with locks