Table 1.

Patientcharacteristics represented in usual care and intervention group

Patient characteristics	Usual care group* (n=1906)	Intervention group* (n=1769)	P value
Female—n (%)	1364 (71.6)	1212 (68.5)	0.04
Age in years—median (IQR)	59 (48–69)	57 (44–68)	0.0002
Race—n (%)			0.89
White	1014 (53.2)	944 (53.4)
Asian	336 (17.6)	304 (17.2)
Black	301 (18)	271 (15.3)
Other	255 (13.4)	250 (14.1)
Hispanic—n (%)	100 (5.3)	86 (4.9)	0.60
Interpreter requested—n (%)	52 (2.7)	67 (3.8)	0.07
Insurance—n (%)			0.001
Private	872 (45.7)	717 (40.5)
Medicare	584 (30.6)	558 (31.5)
Medicaid	427 (22.4)	449 (25.4)
Other	23 (1.2)	45 (2.5)

*Patients may be represented more than once if they had multiple imaging tests ordered during the study time period.