Prevalence of Vitamin D Deficiency in Elderly Patients Admitted to an Inpatient Rehabilitation Unit in Tropical Singapore

Table 2

Mean ± standard deviation of parathyroid hormone (PTH) and adjusted calcium levels.

	Vitamin D deficiency	Vitamin D insufficiency	Normal	value
PTH (pmol/L)	4.19 ± 2.16	4.22 ± 2.15	2.97 ± 1.03	0.002
Calcium (mmol/L)	2.44 ± 0.87	2.41 ± 1.06	2.39 ± 0.77	0.14