Percent positivity appeared slightly higher for NPS (27.7%; 117/422) than for the dual collections (27.0%; 114/422), but this difference did not reach statistical significance (chi-square test P = 0.88).
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Combined Self-Collected Anterior Nasal and Oropharyngeal Specimens versus Provider-Collected Nasopharyngeal Swabs for the Detection of SARS-CoV-2.
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0.8800
0.8800