Table 1.

Characteristics of hospitalized injured Medicare patients who survived to hospital discharge in Oregon and Washington

Total Sample	30,655
Sex
Female	21,010	(68.5%)
Male	9,645	(31.5%)
Age at time of injury. Median (IQR)	82	(77-88)
Age ranges:
67-69	1,760	(5.7%)
70-79	9,505	(31.0%)
80-89	13,868	(45.2%)
90-99	5,351	(17.5%)
100-104	164	(0.5%)
105-108	7	(0.0%)
White race	29,558	(96.4%)
Charlson co-morbidity index. Median (IQR)	1	(0-2)
0	14,554	(47.5%)
1-2	12,013	(39.2%)
≥3	4,088	(13.3%)
SNF resident prior to injury*	1,323	(4.3%)
SNF resident after discharge**	3,111	(10.1%)
Details of index injury hospitalization
Length of stay, days Median (IQR)	4	(3-6)
Inter-hospital transfer after admission	840	(2.7%)
ICD-9 based Injury Severity Score (ICISS) Median (IQR)	0.97	(0.96-0.98)
Serious injury: ICISS ≤0.9	1,246	(4.1%)
Major surgery including orthopedic surgery	17,331	(56.5%)
Major non-orthopedic surgery	1,334	(4.4%)
Blood transfusion	4,507	(14.7%)
Diagnoses
Hip fracture	11,244	(36.7%)
Other extremity injury	12,358	(40.3%)
Spine injury	2,141	(7.0%)
Head injury	2,030	(6.6%)
Chest injury	1,791	(5.8%)
One year mortality	7,642	(24.9%)

^*Defined by the presence of a skilled nursing facility (SNF) or rehabilitation facility bill in the 90 days preceding admission.

^**Defined by the presence of a SNF or rehabilitation facility bill in the 90 days after discharge.