Factors Influencing Urate-Lowering Therapy Prescriptions in Gout Patients: A Retrospective National Cohort Study

Author(s)

Jung J1, Lee YJ2, Kang HY2
1College of Pharmacy, Yonsei Institute of Pharmaceutical Science, Yonsei University, INCHEON, South Korea, 2College of Pharmacy, Yonsei Institute of Pharmaceutical Science, Yonsei University, Incheon, Korea, Republic of (South)

OBJECTIVES: Acute gout flares significantly impact patients’ quality of life, making their prevention a primary goal in gout management, with urate-lowering therapy (ULT) playing a crucial role. This study analyzed ULT prescription rates among gout patients recommended for ULT and identified influencing factors.

METHODS: This retrospective study utilized data from 2007 to 2018 from the National Health Insurance sample cohort, focusing on patients diagnosed with gout (ICD-10 code: M10) at least once each in 2016 and 2017. We examined the proportion of gout patients receiving ULT among those who met specific ULT prescription criteria: criterion 1, having 2 gout flares per year; criterion 2, a history of urolithiasis; criterion 3, presence of comorbidities such as renal impairment, hypertension, ischemic heart disease, or heart failure; and criterion 4, age <40 years. Logistic regression analysis was performed to identify factors associated with ULT prescription.

RESULTS: Out of 6,082 gout patients, 4,566 (75.1%) met at least one criterion, with the highest proportion meeting criterion 3 (50.6%), followed by criterion 4 (18.4%), criterion 1 (16.0%), and criterion 2 (11.6%). Among those meeting any criterion, 3,291 (72.1%) were prescribed ULT. Interestingly, ULT prescriptions did not increase linearly with the number of criteria met. Logistic regression analysis identified several factors significantly associated with the ULT prescription: meeting criterion 3 (odds ratio [OR]: 1.351, 95% confidence interval [CI] 1.098-1.662), being male (OR: 1.687, 95% CI: 1.294-2.2), having a higher income (OR: 1.377-1.524 for upper income decile groups), receiving gout care at hospitals vs. clinics (OR: 1.295, 95% CI: 1.042-1.609), and receiving gout care from internal medicine clinicians vs. orthopedics (OR: 1.352, 95% CI: 1.14-1.604).

CONCLUSIONS: Our finding that only criterion 3 significantly increases the likelihood of ULT prescription suggests that more attention should be given to patients meeting criteria 1, 2, and 4.

Conference/Value in Health Info

2024-11, ISPOR Europe 2024, Barcelona, Spain

Value in Health, Volume 27, Issue 12, S2 (December 2024)

Code

RWD52

Topic

Epidemiology & Public Health, Real World Data & Information Systems

Topic Subcategory

Health & Insurance Records Systems

Disease

Drugs, Musculoskeletal Disorders (Arthritis, Bone Disorders, Osteoporosis, Other Musculoskeletal), Urinary/Kidney Disorders

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