[Retracted] A Predictive Model for the Risk of Cognitive Impairment in Patients with Gallstones

Table 4

C-index of the nomogram prediction model.

Dataset	C-index of the prediction model
	C-index	The C-index (95% CI)
Training set	0.787	0.723-0.852
Validation set	0.778	0.674-0.882
Entire cohort	0.785	0.73-0.839