Table 3.

Spearman’s correlations between CMI-ICDC and other measures (122 hospitals)

	R	P value	Sig*
CPT complexity	0.724	<0.001*	A, B, C
ICU/Ventilator use	0.521	<0.001*	A, C
Surgical proportion	0.404	<0.001*	A, C
Readmissions (same hospital)	0.192	0.034*
Readmissions (any hospital)	0.256	0.004*

*Significance determined with Tamhane’s T² post-hoc comparison.