Febuxostat 40 mg/day showed no clear difference in serious Adverse Events compared with allopurinol (high certainty).
Febuxostat 40 mg/day probably leads to higher serious Adverse Events compared with placebo (moderate certainty).
Febuxostat 80 mg/day showed no clear difference in serious Adverse Events compared with placebo (moderate certainty).
Febuxostat 80 mg/day showed no clear difference in serious Adverse Events compared with allopurinol (moderate certainty).
Febuxostat 120 mg/day showed no clear difference in serious Adverse events compared with placebo (moderate certainty).
Febuxostat 120 mg/day showed no clear difference in serious Adverse Events compared with allopurinol (high certainty).