Table 3.

Conditional logistic regression models for SARS-CoV-2 infection status in matched group (A) of SARS-CoV-2-positive patients with matched controls

Model	(1)		(2)		(3)		(4)
Model Type	Univariable		Multivariable
Explanatory variables	vitamin D ranges		vitamin D ranges + BMI		vitamin D ranges + BMI  + ethnic group		vitamin D ranges + BMI  + ethnic group + comorbidity
	OR (95% CI)	p value	OR (95% CI)	p value	OR (95% CI)	p value	OR (95% CI)	p value
Baseline vitamin D range
< 30 nmol/L	1.442 (1.392–1.494)	< 0.001	1.364 (1.316–1.414)	< 0.001	1.253 (1.208–1.301)	< 0.001	1.246 (1.210, 1.304)	< 0.001
30–50 nmol/L	1.333 (1.291–1.377)	< 0.001	1.272 (1.231–1.314)	< 0.001	1.215 (1.176–1.256)	< 0.001	1.211 (1.177, 1.258)	< 0.001
50–75 nmol/L	1.128 (1.093–1.164)	< 0.001	1.099 (1.065–1.135)	< 0.001	1.091 (1.056–1.126)	< 0.001	1.091 (1.056, 1.126)	< 0.001
> 75 nmol/L	Ref.		Ref.		Ref.		Ref.
BMI category
< 25 kg/m2			Ref.		Ref.		Ref.
25–30 kg/m2			1.198 (1.167–1.229)	< 0.001	1.189 (1.158–1.220)	< 0.001	1.182 (1.152–1.213)	< 0.001
30–35 kg/m2			1.407 (1.365–1.451)	< 0.001	1.384 (1.343–1.427)	< 0.001	1.360 (1.319–1.403)	< 0.001
> 35 kg/m2			1.471 (1.418–1.526)	< 0.001	1.449 (1.397–1.503)	< 0.001	1.406 (1.354–1.460)	< 0.001
Ethnic group
General population					Ref.		Ref.
Ultra-orthodox					2.834 (2.732–2.940)	< 0.001	2.841 (2.739–2.948)	< 0.001
Arab					1.571 (1.518–1.625)	< 0.001	1.558 (1.505–1.612)	< 0.001
Comorbidity
Arrhythmia							1.088 (1.036–1.143)	0.001
Asthma							1.007 (0.963–1.053)	0.753
CHF							1.125 (1.048–1.208)	0.002
COPD							0.929 (0.867–0.996)	0.038
Chronic Renal Failure							1.154 (1.091–1.222)	< 0.001
Diabetes Mellitus							1.120 (1.086–1.156)	< 0.001
Hypertension							1.010 (0.978–1.044)	0.544
IHD							0.988 (0.944–1.034)	0.599
Malignancy							0.932 (0.896–0.969)	< 0.001

OR odds ratio, CI confidence Interval, BMI body mass index, CHF congestive heart failure, COPD chronic obstructive pulmonary disease, IHD ischemic heart disease, ref. reference