Table 3. Open in new tab Predictors for...

Clinical parameters	Univariate regression	Multivariate regression
JIA	0.011	7.333	1.583–33.967	0.010	10.130	1.757–58.415
SLE	0.060	0.109	0.011–1.099
Prednisolone	0.060	0.109	0.011–1.099
MTX	0.094	4.286	0.781–23.525
HCQ	0.003	0.068	0.011–0.410
Anti-TNF	0.024	7.091	1.297–38.765	0.019	10.142	1.469–70.005

Clinical parameters	Univariate regression	Multivariate regression
JIA	0.011	7.333	1.583–33.967	0.010	10.130	1.757–58.415
SLE	0.060	0.109	0.011–1.099
Prednisolone	0.060	0.109	0.011–1.099
MTX	0.094	4.286	0.781–23.525
HCQ	0.003	0.068	0.011–0.410
Anti-TNF	0.024	7.091	1.297–38.765	0.019	10.142	1.469–70.005

Table 3.

Predictors for SARS-CoV-2 neutralizing antibody decay >50% at 6-month after second vaccine dose

Clinical parameters	Univariate regression			Multivariate regression
Clinical parameters	P	OR	95% CI	P	OR	95% CI
JIA	0.011	7.333	1.583–33.967	0.010	10.130	1.757–58.415
SLE	0.060	0.109	0.011–1.099
Prednisolone	0.060	0.109	0.011–1.099
MTX	0.094	4.286	0.781–23.525
HCQ	0.003	0.068	0.011–0.410
Anti-TNF	0.024	7.091	1.297–38.765	0.019	10.142	1.469–70.005

Clinical parameters	Univariate regression			Multivariate regression
Clinical parameters	P	OR	95% CI	P	OR	95% CI
JIA	0.011	7.333	1.583–33.967	0.010	10.130	1.757–58.415
SLE	0.060	0.109	0.011–1.099
Prednisolone	0.060	0.109	0.011–1.099
MTX	0.094	4.286	0.781–23.525
HCQ	0.003	0.068	0.011–0.410
Anti-TNF	0.024	7.091	1.297–38.765	0.019	10.142	1.469–70.005

Confounders adjusted for include gender, race, age at first vaccination, diagnosis and medications. Variables that gave a P < 0.1 in the univariate logistic regression were entered into the multivariate logistic regression by a backward conditional method and confirmed with a forward conditional method. P-value <0.05 was considered statistically significant. Only variables with P-value <0.05 are shown above. SARS-CoV-2: severe acute respiratory syndrome coronavirus 2. OR: odds ratio.

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