Validation of a Saliva-Based Test for the Molecular Diagnosis of SARS-CoV-2 Infection

Table 3

Relationship using Cox regression between Ct values where available in both saliva and NP swabs molecular test ( cases) and COVID-19 severity (composite outcome considered as orotracheal intubation or death).

	HR	95% IC	value	Harrell’s C	95% IC
Ct values on NP swab tests	0.81	0.73-0.89	<0.001	0.738	0.628-0.848
Ct values on saliva samples	0.89	0.83-0.96	0.004	0.659	0.544-0.774