Effect of Test Timing on the Probability of Positive SARS-CoV-2 Swab Test Results: Mixed Model Approach [open pdf - 575KB]
From the Abstract: "During the COVID-19 [coronavirus disease 2019] pandemic, swab tests proved to be effective in containing the infection and served as a means for early diagnosis and contact tracing. However, little evidence exists regarding the correct timing for the execution of the swab test, especially for asymptomatic individuals and health care workers. [...] The objective of this study was to analyze changes in the positive findings over time in individual SARS-CoV-2 [severe acute respiratory syndrome coronavirus 2] swab tests during a health surveillance program."
2021 Roberto Benoni, Silvia Panunzi, Irene Campagna, Francesca Moretti, Giuliana Lo Cascio, Gianluca Spiteri, Stefano Porru, Stefano Tardivo. Posted here with permission. Document is under a Creative Commons license and requires proper attribution and noncommercial use to be shared: [https://creativecommons.org/licenses/by/4.0/]
Public Health and Surveillance: https://publichealth.jmir.org/
JMIR Public Health and Surveillance (2021), v.7 iss.6