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

Table 4

Threshold effect analysis of HbA1c on SUA in females using the two-piecewise linear regression model.

Serum uric acid	Adjusted β (95% CI), value
Female
Model 1: fitting model by standard linear regression	−5.06 (−7.31, −2.81) <0.0001
Model 2: fitting model by two-piecewise linear regression
Inflection point	6.8%
Glycosylated hemoglobin <6.8 (%)	4.63 (−0.98, 10.25) 0.1057
Glycosylated hemoglobin >6.8 (%)	−9.86 (−13.25, −6.47) <0.0001
for the log-likelihood ratio test	<0.001

Age, race, 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, albumin creatinine ratio, SBP, DBP, heavy alcohol consumption, smoking status, and minutes sedentary activity were adjusted.