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

Louis Simonet et al. BMC Health Services Research 2008 8:154   doi:10.1186/1472-6963-8-154