TABLE 4.

Treshold effect analysis of Healthy Eating Index (HEI)-2015 on S-Klotho using the two-piecewise linear regression model.

	Adjusted β (95% CI)	P-value
Fitting by the standard linear model	0.74 (0.21, 1.27)	0.0067
Fitting by the two-piecewise linear model
Inflection point	45.15
HEI-2015 < 45.15	−0.87 (−2.47, 0.73)	0.2858
HEI-2015 > 45.15	1.30 (0.55, 2.05)	0.0007
Log likelihood ratio	0.036

Age, gender, race/ethnicity, education level, income to poverty ratio, physical activity, body mass index (smooth), chronic kidney disease, smoking and drinking habits were adjusted.