Association between Glycosylated Hemoglobin and Serum Uric Acid: A US NHANES 2011–2020

Table 5

Threshold effect analysis of HbA1c on SUA in BMI ≥25 kg/m² and <30 kg/m² using the two-piecewise linear regression model.

Serum uric acid	Adjusted β (95% CI), value
BMI ≥25 kg/m^2, <30 kg/m^2
Model 1: fitting model by standard linear regression	−10.45 (−13.49, −7.41) <0.0001
Model 2: fitting model by two-piecewise linear regression
Inflection point	6.4%
Glycosylated hemoglobin <6.4 (%)	2.92 (−4.53, 10.37) 0.4419
Glycosylated hemoglobin >6.4 (%)	−16.41 (−20.70, −12.12) <0.0001
for the log-likelihood ratio test	<0.001

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