Table 2.

The results of two-piecewise linear regression model.

Inflection point of ELA	Effect size (β)	95% CI	P-value
Effect: Syntax score; cause: ELA; adjusted: age, gender, BMI, SBP, DBP. BMI: body mass index; DBP: diastolic blood pressure; ELA: Elabela; SBP: systolic pressure.
< 63.47	-0.33	-0.96 to 0.31	0.313
≥ 63.47	0.23	0.10 to 0.35	< 0.001
< 85.49	0.71	0.24 to 1.17	0.003
≥ 85.49	0.09	-0.09 to 0.27	0.351