Table 1.

Characteristics of the study subjects in 2005, 2010, and 2015

Characteristics	2005	2010	2015
N	146	134	140
Age (years)	84.3 ± 7.0	85.2 ± 6.8	84.0 ± 8.7
Sex, % females (n)	54.8 (80)	53.0 (71)	57.1 (80)
Length of care episode (days)	12.2 ± 8.0	10.8 ± 5.9	9.9 ± 4.8
Mean CCI score	1.9	2.2	2.4
Number of drugs at admission	6.4 ± 3.8	8.3 ± 3.9	8.8 ± 4.3
Number of drugs at discharge	6.3 ± 3.8	7.9 ± 3.9	8.8 ± 4.3
Number of drug changes	1.88 ± 1.80	2.13 ± 1.86	1.1 ± 1.4
Mean IDU index at admission	0.50	0.57	0.66
Mean IDU index at discharge	0.49	0.41	0.70
Mean IDU index, change during care episode	− 0.01	− 0.16	0.04

Data are presented as mean ± standard deviation unless otherwise indicated

CCI Charlson’s comorbidity index, IDU inappropriate drug use