Association between Serum 25-Hydroxyvitamin D Level and Rheumatoid Arthritis

Table 3

Differences of level of 25(OH)D in peripheral blood of four subgroups in the RA group.

Subgroups	Vitamin D level (nmol/L)	value
DAS28 < 2.6	32.86 ± 12.26	>0.05
2.6 ≤ DAS28 < 3.2	33.97 ± 13.28	>0.05
3.2 ≤ DAS28 ≤ 5.1	38.94 ± 13.35	>0.05
DAS28 > 5.1	38.41 ± 10.64	>0.05

P values were obtained from the comparison of 25(OH)D levels among the subgroups.