Table.

Comparison of total cost estimation models (V1, V2, V3) versus actual hospital costs for syncope patients.

Method for estimating hospital costs	Pearson’s correlation coefficient (95% CI)	Linear regression coefficient (95% CI)	R-squared
V1: unadjusted Medicare payment	0.69 (0.54, 0.80)	0.51 (0.38, 0.64)	0.48
V2: modified Medicare payment, prorated by LOS in calendar days	0.86 (0.78, 0.91)	0.60 (0.52, 0.69)	0.75
V3: modified Medicare payment, prorated by LOS in hours	0.88 (0.81, 0.92)	0.87 (0.76, 0.99)	0.77

CI, confidence interval; LOS, length of stay.