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Table 6 Mean 25(OH)D levels adjusted for BMI and sun exposure time according to categorical variables in non vitamin D supplemented patients

From: Vitamin D deficiency in rheumatoid arthritis: prevalence, determinants and associations with disease activity and disability

Categorial variable

 

Mean

Standard deviation

P

Disease remission

No

21.8

11.1

0.057

 

Yes

23.6

12.1

 

Steinbrocker functional state

1

24.0

12.8

0.001

 

>1

21.2

10.1

 

DAS28

<3.1

22.6

9.9

<0.001

 

>3.1

20.3

10.7

 

Treatment response

Good

23.4

12.1

0.020

 

Fair

21.5

9.9

 
 

No

20.5

10.1

 
  1. Abbreviations: ANOVA, analysis of variance; 25(OH)D, 25-hydroxyvitamin D; BMI, body mass index; DAS 28, Disease Activity Score 28. P-values were obtained by ANOVA and Chi square test.