Is There a Nonlinear Relationship between Serum Uric Acid and Lipids in a Hypertensive Population with eGFR ≥30 ml/min/1.73 m²? Findings from the China Hypertension Registry Study

Table 3

The results of the two-piecewise linear model.

Outcome	N	HDL-C
		β (95% CI)	value
Fitting model by standard linear regression		−0.01 (−0.01, 0.01)	0.083
Fitting model by two-piecewise linear regression
Inflection point of SUA (per 1 mg/dL change)		7.24
<7.24 mg/dL	7,987	−0.02 (−0.02, −0.01)	<0.001
≥7.24 mg/dL	5,368	0.01 (−0.01, 0.02)	0.099
for log likelihood ratio test		0.001

Adjusted for age, sex, smoking, alcohol use, stroke, diabetes, antihypertensive drugs, lipid-lowering drugs, glucose-lowering drugs, BMI, SBP, DBP, Hcy, FBG, and eGFR.