Association between the Weight-Adjusted Waist Index and Serum Uric Acid: A Cross-Sectional Study

Table 5

Threshold effect analysis of WWI on SUA in other race/ethnicity using the two-piecewise linear regression model.

SUA	Adjusted β (95% CI)	values
Other races/ethnicity
Model 1: fitting model by standard linear regression	11.88 (3.26, 20.51)	0.0071
Model 2: fitting model by two-piecewise linear regression
Inflection point		12.14
WWI <12.14(cm/√kg)	7.79 (−1.26, 16.84)	0.0918
WWI >12.14(cm/√kg)	87.10 (33.93, 140.27)	0.0014
P for the log-likelihood ratio test		0.004

Age, sex, education level, the ratio of family income to poverty, BMI, energy intake, protein intake, carbohydrate intake, dietary fiber intake, total fat intake, LDL-C, HDL-C, TG, TCHO, urine albumin, urine creatinine, urine albumin creatinine ratio, HbA1c, SBP, DBP, heavy alcohol consumption, smoking status, and minutes sedentary activity were adjusted.