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Table 4 Spearman correlation coefficient between measures

From: Psychometric validation of the EuroQoL 5-dimension (EQ-5D) questionnaire in patients with spondyloarthritis

 

ODI score

HADS score

EQ-5D VAS score

EQ-5D-5 L score

BASFI

BASMI

BASDAI

ASDAS-CRP

Depression

Anxiety

Total

SF-36

 Physical functioning

− .808a

− .490a

− .365a

− .466a

.546a

.722a

− .771a

− .420a

− .609a

− .620a

 Role physical

− .722a

− .535a

− .522a

− .562a

.547a

.701a

− .581a

− .243a

− .557a

− .536a

 Role emotional

− .623a

− .616a

− .574a

− .638a

.472a

.619a

− .501a

− .209a

− .555a

− .480a

 Vitality

− .622a

− .628a

− .565a

− .635a

.541a

.557a

− .495a

− 0.130

− .574a

− .467a

 Emotional well-being

− .433a

− .734a

− .737a

− .794a

.363a

.468a

− .344a

− 0.092

− .400a

− .284a

 Social functioning

− .638a

− .690a

− .667a

− .726a

.521a

.618a

− .521a

− .189*

− .522a

− .465a

 Bodily pain

− .788a

− .412a

− .398a

− .438a

.533a

.725a

− .611a

− .223a

− .744a

− .695a

 General health

− .532a

− .501a

− .541a

− .556a

.484a

.505a

− .469a

−.168*

− .483a

− .496a

 PCS

− .815a

− .389a

− .347a

− .395a

.569a

.723a

− .711a

− .352a

− .660a

− .696a

 MCS

− .486a

− .737a

− .750a

− .796a

.426a

.501a

− .382a

− 0.107

− .459a

− .344a

EQ-5D-5 L score

− .794a

− .538a

− .466a

− .539a

.584a

NA

− .693a

− .237a

− .718a

− .599a

 

Back pain duration

Psoriasis duration

 

Tender joints

 

Swollen joints

Dactylitis score

Enthesitis score

CRP

ESR

SF-36

 Physical functioning

− 0.107

− 0.262

− .220a

− 0.062

0.011

− 0.152

− .203a

− .158b

 Role physical

0.038

− 0.145

− .173b

− 0.046

0.070

− 0.129

− 0.075

−0.099

 Role emotional

− 0.098

− 0.280

− .169b

− 0.096

0.053

−0.054

− 0.040

−0.004

 Vitality

− 0.077

− 0.203

− 0.006

− 0.030

0.118

− 0.050

− 0.097

−0.026

 Emotional well-being

− 0.144

− 0.465

− 0.066

− 0.098

0.009

0.010

0.001

0.021

 Social functioning

− 0.066

− 0.289

− 0.148

− 0.057

0.026

− 0.033

− 0.016

0.026

 Bodily pain

− 0.010

− 0.191

− .274a

− 0.147

− 0.033

− .179b

− 0.031

0.042

 General health

0.008

− 0.329

− 0.061

− 0.071

0.018

− 0.025

− .179b

− 0.028

 PCS

0.075

− 0.181

− .214a

− 0.085

0.014

− .185b

− .203b

− 0.114

 MCS

− 0.115

− 0.302

− 0.035

− 0.093

0.072

0.006

− 0.034

0.047

EQ-5D-5 L score

− 0.046

− 0.353

− .177a

− 0.118

− 0.058

− 0.129

− 0.118

− 0.076

  1. aCorrelation is significant at the 0.01 level (two-tailed)
  2. bCorrelation is significant at the 0.05 level (two-tailed)
  3. SF-36 Short-Form 36-item questionnaire, PCS physical component score, MCS mental component score, EQ-5D-5 L EuroQol 5-dimension 5-level questionnaire, ODI Oswestry Disability Index, HADS Hospital Anxiety and Depression Scale, EQ-5D EuroQol 5-dimension, VAS visual analogue scale, BASFI Bath Ankylosing Spondylitis Functional Index, BASMI Bath Ankylosing Spondylitis Metrology Index, BASDAI Bath Ankylosing Spondylitis Disease Activity Index, ASDAS-CRP Ankylosing Spondylitis Disease Activity Score (C-reactive protein), ESR erythrocyte sedimentation rate