Table 2.

Regression analysis to show the effects of demographic and clinical characteristic on RDW in RA patients

Variables	Beta	OR	P value
Age	−0.142		0.136
BMI	−0.072		0.450
Disease duration	−0.142		0.137
DAS28	−0.016		0.866
CDAI	0.093		0.971
ESR	0.076		0.427
Gender	−0.266	0.118	0.767
RF	−0.020	0.780	0.980
ACPA	−0.094	0.226	0.910

OR: odd ratio, beta: correlation coefficient (standardized), BMI: Body Mass Index, DAS28: Disease Activity Score 28, CDAI: Clinical Disease Activity Index, ESR: Erythrocyte Sedimentation Rate, RF: Rheumatoid Factor, ACPA: Anti Citrullinated Peptide Antibody, p value: Probability Value (<0.05). Age, BMI, disease duration, DAS28, CDAI and ESR linear regression were used.

Gender, RF and ACPA Both linear and binary logistic regression were used.