Table 2: Comparison of serum levels of 25-OH Vitamin D sufficiency in RA patients and Controls using the independent t-test.

Parameter RA Group Mean ± SD Control Group Mean ± SD P value
25-OH vitamin D Sufficiency Level
(greater than 75 nmol/l)
104.88 ± 19.36
(38.1%)
88.62 ± 8.65
(30.43%)
NS
25-OH vitamin D Insufficiency Level
(50 - 75 nmol/l)
65.76 ± 8.71
(16.67%)
63.22 ± 11.13
(26.1%)
NS
25-OH vitamin D Deficiency Level
(less than 50 nmol/l)
28.33 ± 10.61
(45.24%)
35.50 ± 3.74
(43.48%)
< 0.013*

P value < 0.05* is significant; 25-OH Vitamin D: 25-hydroxyvitamin D.