RT Journal Article
SR Electronic
T1 Utility of the Brief Illness Perception Questionnaire to Monitor Patient Beliefs in Systemic Vasculitis
JF The Journal of Rheumatology
JO J Rheumatol
FD The Journal of Rheumatology
SP 1785
OP 1792
DO 10.3899/jrheum.190828
VO 47
IS 12
A1 Mollie N. Schwartz
A1 Casey A. Rimland
A1 Kaitlin A. Quinn
A1 Marcela A. Ferrada
A1 K. Bates Gribbons
A1 Joel S. Rosenblum
A1 Wendy Goodspeed
A1 Elaine Novakovich
A1 Peter C. Grayson
YR 2020
UL http://www.jrheum.org/content/47/12/1785.abstract
AB Objective To assess the validity and clinical utility of the Brief Illness Perception Questionnaire (BIPQ) to measure illness perceptions in multiple forms of vasculitis.Methods Patients with giant cell arteritis (GCA), Takayasu arteritis (TA), antineutrophil cytoplasmic antibody–associated vasculitis (AAV), and relapsing polychondritis (RP) were recruited into a prospective, observational cohort. Patients independently completed the BIPQ, Multidimensional Fatigue Inventory (MFI), Medical Outcomes Study 36-item Short Form survey (SF-36), and a patient global assessment (PtGA) at successive study visits. Physicians concurrently completed a physician global assessment (PGA) form. Illness perceptions, as assessed by the BIPQ, were compared to responses from the full-length Revised Illness Perception Questionnaire (IPQ-R) and to other clinical outcome measures.Results There were 196 patients (GCA = 47, TA = 47, RP = 56, AAV = 46) evaluated over 454 visits. Illness perception scores in each domain were comparable between the BIPQ and IPQ-R (3.28 vs 3.47, P = 0.22). Illness perceptions differed by type of vasculitis, with the highest perceived psychological burden of disease in RP. The BIPQ was significantly associated with all other patient-reported outcome measures (rho = |0.50–0.70|, P < 0.0001), but did not correlate with PGA (rho = 0.13, P = 0.13). A change in the BIPQ composite score of ≥ 7 over successive visits was associated with concomitant change in the PtGA. Change in the MFI and BIPQ scores significantly correlated over time (rho = 0.38, P = 0.0008).Conclusion The BIPQ is an accurate and valid assessment tool to measure and monitor illness perceptions in patients with vasculitis. Use of the BIPQ as an outcome measure in clinical trials may provide complementary information to physician-based assessments.