Supplementary Table 3.

Univariate and Multivariate Meta-regression Models of Variables Associated With Serologic Response After 1 Dose of Messenger RNA Vaccine

Variable	Univariate meta-regression			Multivariate meta-regression
	Coefficient	95% CI	P value	Coefficient	95% CI	P value
Biologic/DMARD	−4.30	−.91 to 0.31	.68
Methotrexate	NA
Steroid	−2.58	−8.58 to 3.42	.40	-0.90	−3.29 to 1.49	.46
Anti-CD20	NA
Anti-TNF	−2.69	−4.05 to −1.32	<.001	-2.60	−4.49 to −0.72	.0069
Age	0.027	−0.14 to 0.20	.76

NA, not applicable.