Table 2.

Effect of the switch from allopurinol to febuxostat on serum UA levels

	Febuxostatgroup (n = 51)	Allopurinol group (n = 22)	P value**
Before 3 months	6.2 ± 0.9	6.4 ± 0.7	NS
Basal	6.1 ± 1.0	6.2 ± 1.1	NS
3 months	5.9 ± 1.3	6.2 ± 0.7	NS
6 months	5.8 ± 1.2	6.3 ± 1.0	NS
9 months	5.7 ± 1.3*	6.4 ± 1.0	<0.05
12 months	5.7 ± 1.2*	6.6 ± 1.1*	<0.01

Variables are presented as mean ± SD

*significant differences (P < 0.05) in comparison to baseline period wtihin each group

**difference in comparison to each group within same period