Table 2

- Mean IgG antibodies’ titer values for 33 patients with coronavirus disease-19.

Variables	N	Mean±SD	t-values^*	P-values
Age group
≤60 years	26	9,307.8±8,048.3	0.713	0.481
>60 years	7	11,880.1±10,067.9	0.713	0.481
Gender
Male	21	9,686.8±8,328.5	0.148	0.883
Female	12	10,145±8,919.6	0.148	0.883
Symptomatic
Yes	15	10,734.4±9283.1	0.543	0.591
No	18	9,119.3±7807.3
Oxygen required
Yes	2	6,278±1,418.4	0.614	0.544
No	31	10,084.1±8,631	0.614	0.544
Kt/V ≥1.2
Yes	23	9,139.3±7,548.1	0.734	0.468
No	10	11,495.9±10,391.7	0.734	0.468
Comorbidities
DM
Yes	18	10,956.8±10,124.6	0.821	0.418
No	15	8,529.4±5,813.8	0.821	0.418
HTN
Yes	29	10,413.8±8,765	1.032	0.31
No	4	5,790.5±3,548.4	1.032	0.31
IHD
Yes	6	13,067.6±11,425.9	1.036	0.308
No	27	9,139.1±7,684.9	1.036	0.308
Medication for HTN
CCBs
Yes	25	10,235.3±9,083.8	0.455	0.652
No	8	8,660.1±6,195	0.455	0.652
ACEIs/ARBs
Yes	14	13,894.7±9,300.6	2.568	0.015^{^†}
No	19	6,875.6±3,422.2	2.568	0.015^{^†}
BBs
Yes	12	11,970.3±10,587.4	1.096	0.281
No	21	8,643.8±6,879.4	1.096	0.281

↵* assessed via a t-test.
↵^† P-value of <0.05. ACEIs/ARBs: angiotensin converting enzyme inhibitors or angiotensin receptor blockers, BBs: beta blockers,
CCBs: calcium channel blockers, COVID-19: coronavirus disease 2019,
DM: diabetes mellitus, HTN: hypertension, IHD: ischemic heart disease