Table 3.

Healthcare Utilization Over 6 Months Stratified Across Arms^*

	Notification Arm N=86	Usual Care N=87	p-value
Primary Care/Endocrinology Encounters, count per patient†	2.2 (2.2)	1.4 (1.6)	0.011
Cardiology Encounters, count per patient	0.4 (0.8)	0.2 (1.0)	0.143
New Cardiology Encounters, patients (%)	14 (16.3%)	4 (4.6%)	0.015
Coronary Artery Disease Testing, patients (%)‡	13 (15.1%)	2 (2.3%)	0.008
ECG-gated CAC Scans, patients (%)	3 (3.5%)	0 (0.0%)	0.121
Coronary CT Angiography, patients (%)	1 (1.2%)	0 (0.0%)	0.497
Invasive Coronary Angiography, patients (%)	0 (0.0%)	0 (0.0%)	---
Stress Tests, patients (%)	10 (11.6%)	2 (2.3%)	0.018
Resting Echocardiograms, patients (%)	5 (5.8%)	7 (8.0%)	0.766

Abbreviations: CAC: coronary artery calcium; CT: computed tomography; ECG: electrocardiogram.

^*The number of primary care/endocrinology visits and number of cardiology encounters was adjusted for baseline frequency and age. The new cardiology encounter and coronary artery disease testing outcomes were adjusted for baseline age. Unadjusted analyses available in Supplement Table 4.

^†Primary care encounters for patients with Stanford primary care clinician; primary care and endocrinology encounters for patients without Stanford primary care clinician.

^‡Coronary artery disease testing includes ECG-gated CAC scans, coronary CT angiography, invasive coronary angiography, and stress tests (e.g., echo, nuclear, or treadmill stress tests).