Tables 5A.

Multiple logistic regression analysis of a strong decline of vaccination-specific anti-SpikeS1 receptor binding domain (RBD-IgG) antibodies in seroconverted participants of the DIA-Vacc pure vaccination cohort between T2 and T3.

Table 5A. Strong RBD-IgG antibody decline for all participants (n = 1128).

Risk factor	OR	95% CI	p-value
Age	1·012	[1·002,1·021]	0·013
Sex (Ref. = female)	1·463	[1·125,1·902]	0·005
Vaccine type (Ref. = mRNA-1273)	2·147	[1·470,3·136]	<0·001
DP (Ref. = MP)	5·435	[2·876,10·271]	<0·001
KTR (Ref. = MP)	2·533	[1·213,5·290]	0·013
Diabetes Mellitus	1·214	[0·929,1·587]	0·155

MP = Medical Personnel; DP = Dialysis Patients; KTR = Kidney Transplant Recipient; Ref. = reference category; a “strong RBD-IgG antibody decline” between T2 (two months after first vaccination) and T3 (six months) was defined as described in Results and in more detail in Supplementary material. Comparator is the MP cohort.

Model fit: AIC = 1446.97; BIC = 1482.16