Epidemiology and risk factors of hypovitaminosis D in a cohort of internationally adopted children: a retrospective study

Table 8 Multiple logistic regression results: showing predictors of developing Vitamin D Deficiency through Odds Ratios (ORs), 95% Confidence Intervals (CIs) and statistical significance of variables (p value)

Variable	Value	OR	95% CI	p value
Skin color	Very fair / fair (ref)
	Intermediate	1.014	0.590–1.743	0.96
	Olive / Brown	2.387	1.261–4.519	0.08
Season at 1st evaluation	Spring (ref)
	Summer	0.207	0.104–0.410	< 0.001
	Fall	0.726	0.362–1.455	0.366
	Winter	1.000	0.485–2.063	1.000
Housing solution	Foster home (ref)
	Foster family	0.252	0.125–0.507	< 0.001
	Orphanage	3.971	1.971–8.001	< 0.001
ALP status	Normal ^a (ref)
ALP status	Increased ^a	0.560	0.338–0.930	0.025
Age at 1^st evaluation	Continuous variable	1.238	1.140–1.345	< 0.001

ALP Alkaline phosphatase
^a Normal values are extensively described in the “Subjects and methods” section

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