Table 1

Demographics and main clinical characteristics by year. Values are numbers (percentages) unless stated otherwise

Demographic and clinical characteristics2012
(n=30 753)
2013
(n=30 789)
2014
(n=30 231)
2015
(n=29 077)
Missing data (%)
Mean (SD) age, years76.8 (8.2)76.4 (8.1)75.9 (7.8)75.0 (7.6)0.08
Male sex13 212 (43.0)13 335 (43.3)13 176 (43.6)12 687 (43.6)0.08
Patients with hospital admission4151 (13.5)4496 (14.6)4537 (15.0)3015 (10.4)0
Health cover:0.03
 General Medical Services scheme21 053 (68.5)21 472 (69.7)21 202 (70.1)20 859 (71.7)
 Doctor Visit Card3029 (9.8)3153 (10.2)3201 (10.6)3280 (11.3)
 Private patients6518 (21.2)6004 (19.5)5705 (18.9)4817 (16.6)
 Other153 (0.5)160 (0.5)123 (0.4)71 (0.2)
Median (interquartile range) prescription items per patient22 (9-42)22 (9-43)23 (10-44)21 (9-40)0
Mean (SD) Charlson comorbidity index0.89 (1.23)0.94 (1.27)1 (1.31)1 (1.31)24.2
Prevalence of potentially inappropriate prescribing events:0
 16452 (21.0)6843 (22.2)6771 (22.4)6857 (23.6)
 24171 (13.6)4254 (13.8)4429 (14.6)4220 (14.5)
 ≥33317 (10.8)3654 (11.9)3762 (12.4)3746 (12.9)