Table 3.

Characteristics of two randomized controlled trials.

First author	Year	Study design	Treatment group				Control group				Jadad score
			Samples	Pre-UA	Post-UA	p value	Samples	Pre-UA	Post-UA	p value
Prudon	2013	Parallel	19	361.5 ± 96.2 (μmol/l)	353.9 ± 95.6 (μmol/l)	0.9	19	412.6 ± 91.2 (μmol/l)	406.4 ± 90.8 (μmol/l)	0.9	3
Campos-Rodriguez	2018	Parallel	151	5.20 ± 1.25 (mg/dl)	5.22 ± 1.23 (mg/dl)	0.702	156	5.02 ± 1.26 (mg/dl)	5.07 ± 1.31 (mg/dl)	0.208	5