Table 3.

Predictors of SARS-CoV-2 infection^a

	Model 1			Model 2
Characteristic	RR	95%CI	p	RR	95%CI	p
Age, years	1.02	0.97, 1.06	0.332	1.03	0.98, 1.07	0.140
Hypertension	1.32	0.83, 2.96	0.420	1.33	0.44, 1.89	0.470
Type 2 diabetes	1.98	0.40, 9.76	0.401	1.17	0.23, 6.04	0.843
Obesity	2.01	0.82, 4.88	0.122	1.82	0 .74, 4.48	0.190
Basal VD deficiency	0.86	0.35, 2.10	0.756	1.42	0.56, 3.56	0.450
VDGb	0.22	0.09, 0.56	0.001	-	-	-
25-hydroxyvitamin D3, deltasc	-	-	-	0.87	0.82, 0.93	0.001

^aLogistic regression analysis, adjusted by type of personnel and hospital.

^bCompared with PG.

^cDeltas are the difference between final and basal concentration.

95%CI, 95% confidence interval; VD, vitamin D; VDG, vitamin D supplemented group; PG, placebo group.