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Table 2 Pearson correlational relationships between continuous demographic, baseline and follow-up variables

From: Are depression and anxiety associated with disease activity in rheumatoid arthritis? A prospective study

   Demographics Baseline variables Follow-up variables
   Age Disease duration N. comorbidities ESR TJC SJC PGA DAS-28 Depression Anxiety ESR TJC SJC PGA DAS-28
  Age -               
  Disease duration 0.29* -              
  Number of comorbidities 0.32 0.22 -             
Baseline Variables ESR 0.10 0.27* 0.07 -            
TJC −0.13 0.07 0.13 −0.13 -           
SJC −0.14 −0.03 0.03 0.11 0.54** -          
PGA −0.20 0.16 0.25 0.18 0.64*** 0.45*** -         
DAS-28 −0.17 0.13 0.03 0.44*** 0.41** 0.47*** 0.60*** -        
Depression −0.26 0.12 −0.16 0.04 0.25 0.23 0.44** 0.40** -       
Anxiety −0.29* −0.02 −0.11 0.03 0.16 0.19 0.31* 0.29* 0.76*** -      
Follow-up Variables ESR 0.10 0.33* −0.01 0.86*** −0.13 −0.02 0.16 0.37** 0.03 0.03 -     
TJC 0.18 0.23 0.15 −0.18 0.24 0.00 0.32* 0.07 0.34* 0.23 0.02 -    
SJC 0.33* 0.32* 0.16 0.23 0.01 0.01 0.11 0.07 0.16 0.08 0.44** 0.64*** -   
PGA 0.19 0.33* 0.03 0.11 0.29* 0.19 0.46*** 0.45*** 0.45*** 0.43** 0.22 0.37** 0.23** -  
DAS-28 −0.03 0.21 0.06 0.36** 0.07 0.08 0.35* 0.80*** 0.39** 0.33* 0.47** 0.33* 0.36* 0.61*** -
  1. ESR erythrocyte sedimentation rate, TJC tender joint count, SJC swollen joint count, PGA patient global assessment, DAS-28 28 joint disease activity scale, HADS-D hospital anxiety and depression scale depression subscale, HADS-A hospital anxiety and depression scale anxiety subscale. * p < 0.05, **p < 0.01, ***p < 0.001