Table 1.

Characteristics of the study cohort N = 330.

Characteristic	Patients (%)
Age (years)
Mean (standard deviation), median	63.4 (10.3), 62
Category
<40	1.4
40–49	8.1
50–59	26.1
60–69	32.1
70–79	21.4
≥80	10.9
US region of residence
Midwest	44.0
Northeast	20.3
South	24.8
West	10.9
Type of medical record reviewed
Hospitalization	53.4
Ambulatory care	46.6