Author: Duque, M. Perez; Lucaccioni, H.; Costa, C.; Marques, R.; Antunes, D.; Hansen, L.; Sá Machado, R.
Title: COVID-19 symptoms: a case–control study, Portugal, March–April 2020 Cord-id: j0ai63ir Document date: 2021_2_19
ID: j0ai63ir
Snippet: COVID-19, although a respiratory illness, has been clinically associated with non-respiratory symptoms. We conducted a negative case–control study to identify the symptoms associated with SARS-CoV-2-positive results in Portugal. Twelve symptoms and signs included in the clinical notification of COVID-19 were selected as predictors, and the dependent variable was the RT-PCR test result. The χ(2) tests were used to compare notified cases on sex, age group, health region and presence of comorbid
Document: COVID-19, although a respiratory illness, has been clinically associated with non-respiratory symptoms. We conducted a negative case–control study to identify the symptoms associated with SARS-CoV-2-positive results in Portugal. Twelve symptoms and signs included in the clinical notification of COVID-19 were selected as predictors, and the dependent variable was the RT-PCR test result. The χ(2) tests were used to compare notified cases on sex, age group, health region and presence of comorbidities. The best-fit prediction model was selected using a backward stepwise method with an unconditional logistic regression. General and gastrointestinal symptoms were strongly associated with a positive test (P < 0.001). In this sense, the inclusion of general symptoms such as myalgia, headache and fatigue, as well as diarrhoea, together with actual clinical criteria for suspected cases, already updated and included in COVID-19 case definition, can lead to increased identification of cases and represent an effective strength for transmission control.
Search related documents:
Co phrase search for related documents- abdominal breath and acute respiratory distress syndrome: 1
- abdominal breath and logistic regression: 1, 2, 3, 4
- abdominal breath pain and acute respiratory distress syndrome: 1
- abdominal breath pain and logistic regression: 1, 2, 3, 4
- abdominal breath pain shortness and acute respiratory distress syndrome: 1
- abdominal breath pain shortness and logistic regression: 1, 2, 3, 4
- abdominal pain and acute pneumonia: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
- abdominal pain and acute respiratory distress syndrome: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16
- abdominal pain and logistic regression: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25
- abdominal pain and low prevalence: 1, 2, 3, 4
- abdominal pain nausea and acute pneumonia: 1, 2, 3, 4
- abdominal pain nausea and acute respiratory distress syndrome: 1, 2, 3, 4, 5
- abdominal pain nausea and logistic regression: 1, 2, 3, 4
- abdominal pain nausea and low prevalence: 1
- abdominal pain nausea diarrhoea and acute pneumonia: 1
- abdominal pain nausea diarrhoea and acute respiratory distress syndrome: 1
- active outbreak and acute respiratory distress syndrome: 1, 2
- active outbreak and logistic regression: 1, 2
- acute pneumonia and low prevalence: 1
Co phrase search for related documents, hyperlinks ordered by date