Table 1.

Descriptive analysis of the two cohorts from 2011 and 2013

Variables		2011 (n)	%	2013 (n)	%	p-value
Total		15,361		15,945
Age	75–79	6027	39.24	6472	40.59
	80–84	4751	30.93	4733	29.68
	85–89	3029	19.72	3021	18.95
	≥90	1554	10.12	1719	10.78	< 0.05
Gender	Women	8907	57.98	9167	57.49
	Men	6454	42.02	6778	42.51	0.377
Use of PIM	No	13,733	89.40	14,823	92.96	< 0.001
	Yes	1628	10.60	1122	7.04	< 0.001
Number of chronic conditions	0	2117	13.78	1762	11.05
	1	2342	15.25	2076	13.02
	2–4	6559	42.70	6822	42.78
	5–7	3157	20.55	3773	23.66
	≥8	1186	7.72	1512	9.48	< 0.001
	No-medications	3198	20.82	3060	19.19
Polypharmacy	1–4	7153	46.57	7557	47.39
	≥5	5010	32.62	5328	33.41	< 0.001