Table 9.

Comparison of serum uric acid levels between 2 groups of patients before and after treatment (person) M(P25, P75).

	Control group (n = 101)	Experimental group—high concentration alkaline water (n = 100)	Experimental group—medium concentration alkaline water (n = 100)	Experimental group—low concentration alkaline water (n = 96)	t	P
Before treatment	513.80 ± 30.66	516.87 ± 37.02	516.87 ± 37.02	516.87 ± 37.02	10.42	.67
3 mo after treatment	518.53 ± 29.05	476.31 ± 28.42	491.58 ± 32.13	503.67 ± 29.77	13.98	.03
6 mo after treatment	517.73 ± 31.57	456.27 ± 30.75	474.48 ± 28.89	490.75 ± 30.60	19.12	.01
12 mo after treatment	518.19 ± 29.44	438.92 ± 29.34	459.61 ± 31.69	478.39 ± 28.95	13.57	.04

The difference before and after the follow-up follows a normal distribution, and the normal distribution data is described using mean ± standard deviation and paired sample t test.