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Detection of SARS-CoV-2 from NPS and OPS in all patients.
| NPS positive | NPS negative | Total | |
|---|---|---|---|
| OPS positive | 11 | 1 | 12 |
| OPS negative | 45 | 63 | 108 |
| Total | 56 | 64 | 120 |
McNemar's test χ2 = 42.09, P < 0.001; Kappa = 0.19 (95% CI 0.07–0.31).
Kappa: <0, poor; 0 to 0.2, slight; 0.21 to 0.4, fair; 0.41 to 0.6, moderate; 0.61 to 0.8, substantial; 0.81 to 1.0, almost perfect.
SARS-CoV-2, severe acute respiratory syndrome coronaviruses 2; NPS, nasopharyngeal swabs; OPS, oropharyngeal swabs.
