Evaluation of Vitamin D Status in Rheumatoid Arthritis and Its Association with Disease Activity across 15 Countries: “The COMORA Study”

Table 4

Association analysis between comorbidities and vitamin D status.

Comorbidities	Vitamin D; normal	Vitamin D; insufficiency	Vitamin D; deficiency
Hypertension	181 (36.6)	272 (55.1)	41 (8.3)	0.9
Diabetes	46 (34.6)	76 (57.1)	11 (8.3)	0.8
Dyslipidemia	41 (33.6)	66 (54.1)	15 (12.3)	0.2
Renal deficiency	15 (37.5)	21 (52.5)	4 (10)	0.9
Anemia and blood diseases	66 (40)	88 (53.3)	11 (6.7)	0.5
Cancer	18 (42.9)	21 (50)	3 (7.1)	0.7
Osteoporosis therapy	124 (42.6)	150 (51.5)	17 (5.8)	0.04
Lung diseases (COPD, asthma, cancer)	50 (45.5)	45 (40.9)	15 (13.6)	0.006
Liver diseases	20 (39.2)	26 (51)	5 (9.8)	0.8
Ulcer and stomach disease	156 (33.7)	91 (54.8)	19 (11.4)	0.3

Number and percentage; vitamin D ≥ 30 ng/mL, 10 ng/mL ≤ vitamin D < 30 ng/mL, and vitamin D < 10 ng/mL; significant if ≤0.05.