biostudies-literatureUnknown2(2)Shoer S<h4>Background</h4>The gold standard for COVID-19 diagnosis is detection of viral RNA through PCR. Due to global limitations in testing capacity, effective prioritization of individuals for testing is essential.<h4>Methods</h4>We devised a model estimating the probability of an individual to test positive for COVID-19 based on answers to 9 simple questions that have been associated with SARS-CoV-2 infection. Our model was devised from a subsample of a national symptom survey that was answered over 2 million times in Israel in its first 2 months and a targeted survey distributed to all residents of several cities in Israel. Overall, 43,752 adults were included, from which 498 self-reported as being COVID-19 positive.<h4>Findings</h4>Our model was validated on a held-out set of individuals fMed (New York, N.Y.)196-208.e4https://www.ebi.ac.uk/biostudies/studies/S-EPMC7547576biostudies-literatureA Prediction Model to Prioritize Individuals for a SARS-CoV-2 Test Built from National Symptom Surveys.PMC7547576Rossman HBalicer RIrony AKolobkov DCastel NSegal EShoer SLavon AGodneva AHoch OShilo SZer-Aviv MSpector TCohen OZohar AEKalka IHizi DKeshet AKarady TMeir TShalev VSudre CKariv AGeiger BGavrieli AfalseA Prediction Model to Prioritize Individuals for a SARS-CoV-2 Test Built from National Symptom Surveys.<h4>Background</h4>The gold standard for COVID-19 diagnosis is detection of viral RNA through PCR. Due to global limitations in testing capacity, effective prioritization of individuals for testing is essential.<h4>Methods</h4>We devised a model estimating the probability of an individual to test positive for COVID-19 based on answers to 9 simple questions that have been associated with SARS-CoV-2 infection. Our model was devised from a subsample of a national symptom survey that was answered over 2 million times in Israel in its first 2 months and a targeted survey distributed to all residents of several cities in Israel. Overall, 43,752 adults were included, from which 498 self-reported as being COVID-19 positive.<h4>Findings</h4>Our model was validated on a held-out set of individuals f2021-01-01T00:00:00Z2021 Feb2025-05-29T22:30:52.252Z2025-05-29T22:30:52.252ZS-EPMC75475763307325810.1016/j.medj.2020.10.002