Correlation between disease activity and patient-reported health-related quality of life in rheumatoid arthritis: a cross-sectional study.

RA can have considerable impairment on patients' HRQoL, both in terms of physical and psychosocial functioning. Given the strong correlation between clinical activity and HRQoL scores, and the fact that HRQoL can be an important clinical supplement. The EQ-5D-5L is probably the most appropriate generic measurement instrument for measuring HRQoL in RA patients.