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Risk of incident benign prostatic hyperplasia in patients with gout: a retrospective cohort study
Wei-Ming Li1,2,3, Nelly Pasaribu4, Su-Shin Lee5,6
1Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
Insights
Gout increases the risk of benign prostatic hyperplasia (BPH) in men, especially younger individuals and those with gouty nephropathy. This association highlights a significant link between these two conditions.
Area of Science:
- Urology
- Rheumatology
- Epidemiology
Background:
- Gout, a common inflammatory arthritis, is associated with various comorbidities.
- Benign prostatic hyperplasia (BPH) is a prevalent condition affecting aging men.
- Understanding the relationship between gout and BPH is crucial for patient management.
Purpose of the Study:
- To investigate the association between gout and the subsequent risk of developing benign prostatic hyperplasia (BPH).
- To explore how age and specific gout phenotypes modify this association.
Main Methods:
- Retrospective cohort study utilizing Taiwan's National Health Insurance Research Database.
- Inclusion of 29,269 patients with gout and 29,269 matched controls (1:1 ratio) from 1997-2010.
- Cox proportional hazards model used to assess the association, adjusting for potential confounders.
Main Results:
- Patients with gout exhibited a higher incidence rate of BPH (19.62 vs. 10.11 per 1000 person-years).
- Gout was associated with a 30% increased risk of BPH (adjusted HR 1.30; 95% CI 1.24-1.36).
- The association was significantly stronger in younger age groups (20-40 years: HR 2.74; 41-60 years: HR 1.39) and in patients with gouty nephropathy (HR 1.30).
Conclusions:
- Male gout is positively associated with an increased risk of benign prostatic hyperplasia.
- This risk is particularly elevated in younger men with gout and those with gouty nephropathy.
- Findings suggest a potential shared pathophysiology or common risk factors between gout and BPH.
Background:
This retrospective cohort study evaluated the association between gout and the risk of benign prostatic hyperplasia among men by using data from Taiwan's National Health Insurance Research Database.
Methods:
Population-based representative insurance (outpatient and inpatient) claims data of 29,269 patients with gout and 29,269 matched patients without gout (1:1 ratio) for the period of 1997-2010 in Taiwan were identified. The association between gout and benign prostatic hyperplasia was evaluated using the Cox proportional hazards model. The associations of age by gout and gout phenotypes with benign prostatic hyperplasia risk were estimated.
Results:
Patients with gout had a higher incidence rate of benign prostatic hyperplasia than those in the matched gout-free group (19.62 vs. 10.11 events per 1000 person-years). Compared with the gout-free group, the adjusted hazard ratios (HRs) (95% confidence intervals (CIs)) for benign prostatic hyperplasia were 1.30 (1.24-1.36). The gout-to-benign prostatic hyperplasia association was modified by age (Pinteraction < 0.0001) in gout patients the age groups of 20-40 years (adjusted HR 2.74, P < 0.0001) and 41-60 years (adjusted HR 1.39, P < 0.0001) but not in the age group of >60 years (adjusted HR 1.07, P = 0.063). Compared with gouty tophi, a higher risk of benign prostatic hyperplasia was noted in gouty nephropathy (adjusted HR 1.30, 95% CI 1.12-1.50).
Conclusions:
Our results suggest that male gout is positively related to benign prostatic hyperplasia, particularly in young gout patients and those with gouty nephropathy.
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