XDH and sarcopenia: When presence of XOR inhibitor was replaced by type and presence of XOR inhibitor, use of allopurinol and febuxostat (ref. absence of XOR inhibitor) was similarly associated with sarcopenia (OR 0.435, 95% CI 0.185–1.027, p = 0.058; OR 0.509, 95% CI 0.182–1.425, p = 0.198, respectively) and severe sarcopenia (OR 0.298, 95% CI 0.099–0.892, p = 0.030; OR 0.163, 95% CI 0.042–0.634, p = 0.009, respectively), suggesting that differences among types of XOR inhibitors have little effect on sarcopenia/severe sarcopenia.