Table 3.

Threshold effect analysis of CMI on gallstones using the two-piecewise regression model

Outcome: Gallstones	Adjusted OR (95% CI)	P-value
Inflection point	0.69
<0.69	10.76 (3.57, 32.41)	< 0.0001
>0.69	1.02 (0.98, 1.07)	0.2932
Log likelihood ratio test		< 0.001

The results of subgroup analysis were adjusted for all covariates as model 3

CMI, cardiometabolic index; OR, odds ratio, 95% CI, 95% confidence interval