Table 3.

Adherence to osteoporosis treatment after the index hip fracture

	U.S. Medicare (2005–2008)	U.S. Commercial (2003–2012)	Korea (2007–2011)	Spain (2007–2012)
N	4,704	6,700	57,631	17,167
PDC up to 6 months, mean ± SD	0.73 ± 0.28	0.72 ± 0.29	0.58 ± 0.33	0.72 ± 0.32
% of patients with
PDC ≥0.75	59.98	58.70	39.48	62.03
0.5≤ PDC <0.75	16.92	16.61	20.24	8.18
0.25≤ PDC <0.5	12.77	12.51	17.44	14.29
PDC <0.25	10.33	12.18	22.83	15.50
PDC up to 1 year, mean ± SD	0.70 ± 0.30	0.67 ± 0.31	0.43 ± 0.32	0.66 ± 0.35
% of patients with
PDC ≥0.75	57.65	52.90	22.46	54.16
0.5 ≤ PDC <0.75	16.01	17.59	14.13	11.06
0.25≤ PDC <0.5	13.27	12.77	19.93	11.54
PDC <0.25	13.07	16.74	43.47	23.25

PDC: proportion of days covered