Vitamin D deficiency, functional status, and balance in older adults with osteoarthritis

Table 1 Characteristics of the population

Variable	Mean	Standard deviation
Age; BMI	70.6; 28.0	6.5; 4.7
Gender; Male; Female; Total	Absolute frequency (n) ; 27; 78; 105	Relative frequency (%); 25.7; 74.3; 100.0
Tobacco use; Yes; No	Absolute frequency (n); 36; 69	Relative frequency (%); 34.3; 65.7

BMI: Body mass index.

Table 2 Association between vitamin D levels and osteoarthritis severity, n (%)

Vitamin D classification	Osteoarthritis severity
	Mild or moderate	Severe	Total
Deficiency/insufficiency	33 (43.4)	43 (56.6)	76 (100.0)
Normal	19 (65.6)	10 (34.5)	29 (100.0)
Total	52 (49.5)	53 (50.5)	105 (100.0)

Statistically significant, χ² test, P = 0.04.