Objectives: There are often discrepancies in the evaluation of disease activity between patients and physicians in systemic lupus erythematosus (SLE). In this study, we examined the factors that affect those evaluations.
Methods: Physician visual analogue scale (Ph-VAS), patient VAS (Pt-VAS), Systemic Lupus Erythematosus Disease Activity Index 2000 (SLEDAI-2k), glucocorticoid (GC) usage and dose, age, Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index, and three patient-reported outcomes (SLE symptom checklist [SSC], short-form 36 questionnaire [SF-36], and LupusPRO) were obtained from a study performed in 2019 using 225 SLE outpatients of the Kyoto Lupus Cohort at Kyoto University Hospital. Correlations among Ph-VAS, Pt-VAS, or dif (Pt-VAS-Ph-VAS) (Pt-VAS minus Ph-VAS) and other factors were examined.
Results: We found a significant discrepancy between Pt-VAS (median 38.0 mm) and Ph-VAS (median 18.7 mm) scores (p < 0.001). SSC score showed a significant correlation with Pt-VAS and dif (Pt-VAS-Ph-VAS) (p < 0.001). Among SSC items, fatigue showed the most significant correlation with dif (Pt-VAS-Ph-VAS). We also showed that higher dif (Pt-VAS-Ph-VAS) was associated with lower quality of life (QOL) evaluated by SF-36 and LupusPRO.
Conclusions: Pt-VAS scores tended to be higher than Ph-VAS scores, and the discrepancy was influenced mainly by fatigue. Higher dif (Pt-VAS-Ph-VAS) was associated with lower patient QOL.
Keywords: Systemic lupus erythematosus; patient-reported outcome; quality of life.