Table 4. Binary logistic regression analysis.

Variable	SE	OR	OR (95% CI)	Wald Chi-Square	p-value
Hypertensive	0.609	3.161	0.958-10.432	35.698	0.05
Overweight	0.664	4.664	1.269-17.139	53.780	0.02
Ageing	12.720	21.189	1.752-256.630	53.630	0.02

Logit model applied to examine the association of cfDNA content ≥ 800 ng/ml with hypertension (hypertensive versus non-hypertensive), ageing (aged≥ 65 years versus < 65 years), and overweight (BMI≥30 versus BMI<30).

SE: standardization error; OR: odds ratio; CI: confidence interval.