Table 4.

Association between score categories and hospital use.

Score	Patients discharged to a PAC facility	LOS in days	Inappropriate hospital days	Inappropriate hospital days due to discharge delays
	n (%)	(mean ± SD)	(mean ± SD)	(mean ± SD)
a. Derivation cohort (n = 299)
Less than 8 points n = 141 (47%)	12 (9%)	11.4 (± 6.6)	2.8(± 3.5)	0.2 (± 1.1)
8 to 15 points n = 108 (36%)	43 (40%)	12.6 (± 6.2)	3.6 (± 4.1)	1.5 (± 2.9)
16 points and more n = 50 (17%)	40 (80%)	14.5 (± 7.0)	4.8 (± 4.8)	3.6 (± 3.6)
P	<0.001*	0.005†	0.03†	<0.001†
b. Prospective validation cohort (n = 161)
Less than 8 points n = 58 (36%)	7 (12%)	8.6 (± 5.9)	3.0 (± 3.7)	0.7 (± 2.3)
8 to 15 points n = 59 (37%)	24 (41%)	12.6 (± 7.2)	5.0 (± 5.5)	2.6 (± 4.6)
16 points and more n = 44 (27%)	27 (61%)	14.1 (± 9.7)	5.3 (± 6.5)	3.5 (± 5.6)
P	< 0.001*	<0.001†	0.08†	<0.001†

* Fisher's exact test; ^† Kruskal-Wallis test