Page 107 - SPONDYLOARTHRITIS IN COLOMBIA -

Construct validity
The ASAS-HI had good correlation with the following disease specific clinical parameters: patient global (r=0.58), spinal pain (r=0.59), pain, BASDAI, BASFI, ASDAS, and HAD-S (r=0.60-0.70) and the highest correlations with EQ-5D and SF-36 (r>0.70). The correlations of ASAS-HI with age and symptom duration were weak. Results are presented in table 2.
Table 2 Correlation coefficient (95% IC) between ASAS-HI score and clinical characteristics (n=50)
Spearman correlation coefficient
Characteristics
Age -0.007 0.96
ASAS-HI score P value
Symptom duration
Patient global (0-10 NRS) Pain (0-10 NRS)
Spinal pain (0-10 NRS) BASDAI
BASFI
ASDAS
EQ-5D
SF-36 (physical component) SF-36 (mental component) HAD-S Anxiety
HAD-S Depression
-0.11 0.43 0.58 < 0.0001 0.61 <0.0001 0.59 <0.0001 0.66 <0.0001 0.62 <0.0001 0.65 <0.0001 0.75 <0.0001 0.72 <0.0001 0.74 <0.0001 0.65 <0.0001 0.69 <0.0001
ASAS HI, The Assessment of Spondyloarthritis international Society Health Index;
BASDAI, Bath ankylosing spondylitis activity disease index; BASFI, Bath ankylosing spondylitis functional index; ASDAS, Ankylosing Spondylitis Disease Activity Score; NRS, numerical rating scale; EQ-5D, EuroQol five dimensions questionnarie; SF-36, Short form Health Survey 36 items; HAD-S, Hospital Anxiety and Depression Scale.
Internal consistency
ASAS-HI scores showed a high internal consistency with a Cronbach´s alpha of 0.91.
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