Table 1.

Univariate Analyses Comparing Distribution of Each of the Studied Variables in Relation to the Pre- and Post-clinical Decision Support Implementation Periods

	Pre-CDS	Post-CDS	P Value
Total Patients	1542	1349
Patient age, y	55.23 ± 18.1	55.07 ± 17.7	.8 (NS)
Women	1006 (65.2%)	848 (62.9%)	.18 (NS)
History of malignancy	674 (43.7%)	624 (46.3%)	.17 (NS)
History of thrombosis	177 (11.5%)	184 (13.6%)	.08 (NS)
History of surgery	172 (11.15%)	154 (11.4%)	.82 (NS)
Elevated D-dimer	472 (30.6%)	329 (24.4%)	<.001
Imaging requests entered by attending physicians	246/1474 (16.7%)	197/1331 (14.8%)	.17 (NS)

CDS = clinical decision support;NS = not significant.