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Positivity rates in saliva protocols according to Ct values on ONS.
| CT values on ONS | Positivity rate in L protocol | Positivity rate in T protocol |
|---|---|---|
| < 20 | 96.8% (61/63) | 93.6 % (59/63) |
| 20.1−30 | 81.7 % (58/71) | 81.7 % (58/71) |
| >30 | 27.8% (5/18) | 5.6 % (1/18) |
| p* | <0.001 | <0.01 |
ONS- oro/nasopharyngeal swabs.
chi-squared test for trend in proportions.
