Table 5.

Correlation between quantitative values returned by the Roche and the DiaSorin (electro)chemiluminescent immunoassays and neutralizing antibody titers against several SARS‐CoV‐2 (sub)variants in vaccinated individuals according to their SARS‐CoV‐2 infection status

SARS‐CoV‐2 (sub)varianta	Rho value [95% CI] (p value) for the correlation between the Roche/DiaSorin immunoassays and NtAb titers
	All participants	SARS‐CoV‐2 ‐naïve	SARS‐CoV‐2‐experienced
Wuhan‐Hu‐1	0.69 [0.58−0.77] (<0.001)/0.71 [0.61−0.79] (<0.001)	0.71 [0.60−0.81] (<0.001)/0.75 [0.64−0.83](<0.001)	0.40 [0.09−0.64] (<0.001)/0.37 [0.06−0.62] (<0.001)
Omicron BA.1	0.64 [0.52−0.73] (<0.001)/0.67 [0.55−0.75](<0.001)	0.61 [0.46−0.73] (<0.001)/0.60 [0.45−0.73] (<0.001)	0.52 [0.24−0.72] (<0.001)/0.59 [0.33−0.77] (<0.001)
Omicron BA.2	0.30 [0.08−0.49] (<0.001)/0.24 [0.02−0.44] (<0.001)	0.52 [0.27−0.70] (<0.001)/0.49 [0.02−0.68] (<0.001)	−0.05 [(−0.34 to 0.31] (0.78)/−0.15 [−0.48 to 0.21] (0.4)

Abbreviation: NtAb, neutralizing antibodies.

^a A total of 127 were assayed for quantitation of NtAb against Wuhan‐Hu‐1 and Omicron BA.1. A total of 83 sera were assayed for NtAb against Omicron BA.2.