. Author manuscript; available in PMC: 2017 Dec 1.

Published in final edited form as: Arthritis Rheumatol. 2016 Dec;68(12):3002–3009. doi: 10.1002/art.39813

Table 3.

Within person change from baseline in uric acid (mg/dL) by diet and overall according to sodium intake

	Baseline Mean (SD) or Difference (95% CI)	Low Sodium		Medium Sodium		High Sodium		Average Difference from Baseline
	Baseline Mean (SD) or Difference (95% CI)	Difference (95% CI)	P	Difference (95% CI)	P	Difference (95% CI)	P	Difference (95% CI)	P
Overall^*	5.0 (1.3)	0.2 (0.0, 0.4)	0.02	−0.1 (−0.3, 0.1)	0.17	−0.2 (−0.4, −0.1)	0.01	−0.1 (−0.2, 0.1)	0.45
Control diet^*	5.0 (1.3)	0.4 (0.2, 0.6)	<0.001	0.1 (−0.1, 0.3)	0.46	−0.1 (−0.4, 0.1)	0.29	0.1 (−0.1, 0.3)	0.22
DASH diet^*	4.9 (1.3)	0.0 (−0.3, 0.2)	0.94	−0.4 (−0.7, 0.0)	0.04	−0.3 (−0.6, −0.1)	0.01	−0.2 (−0.5, 0.0)	0.06
Difference^**	−0.1 (−0.6, 0.4)	−0.4 (−0.7, −0.1)	0.01	−0.4 (−0.8, 0.0)	0.04	−0.2 (−0.6, 0.2)	0.25	−0.4 (−0.7, −0.1)^***	0.02^***

Within-person comparisons of change from baseline performed using generalized estimating equations.

^**

Between diet comparisons performed using t-tests.

^***

Based on change from baseline at the end of each salt diet. Performed using generalized estimating equations to account for within-person correlation of repeat measurements.