Comprehensibility, reliability, validity, and responsiveness of the Thai version of the Health Assessment Questionnaire in Thai patients with rheumatoid arthritis

Table 4 Spearman correlation coefficients between each domain and the Thai HAQ and outcomes of rheumatoid arthritis disease activity

Thai HAQ domain	Tender joint count	Swollen joint count	Patient global assessment	Physician global assessment	Pain	ESR	ACR functional class
Dressing	0.31	0.32	0.40	0.34	0.34	0.23^a	0.47
Arising	0.42	0.39	0.45	0.42	0.35	0.43	0.35
Eating	0.32	0.33	0.35	0.30	0.31	0.35	0.44
Walking	0.37	0.27^a	0.43	0.39	0.35	0.28^a	0.53
Hygiene	0.39	0.39	0.44	0.37	0.33	0.40	0.42
Reach	0.39	0.39	0.39	0.35	0.32	0.31	0.42
Grip	0.29^a	0.29^a	0.35	0.33	0.22^a	0.28^a	0.38
Activity	0.30	0.35	0.44	0.42	0.41	0.23^a	0.51
Thai HAQ	0.46	0.43	0.52	0.48	0.42	0.37	0.57

^aCorrelation coefficient of less than 0.3 represents weak correlation and 0.3 to 0.6 represents moderate correlation between the Thai HAQ (Thai version of the Health Assessment Questionnaire Disability Index) domain and rheumatoid arthritis disease activity. P < 0.05 for all correlation coefficients. ACR, American College of Rheumatology; ESR, erythrocyte sedimentation rate.

ISSN: 1478-6362