Abdominal ultrasound-scanning versus non-contrast computed tomography as screening method for abdominal aortic aneurysm – a validation study from the randomized DANCAVAS study

Table 2 Sensitivity, Specificity and predictive values when US compared to nCT as reference standard CT

	Sensitivity	95% CI	Specificity	95% CI	PV+	95% CI	PV-	95% CI
AP	0.7037	0.5;0.86	0.9920	0.98;0.99	0.8261	0.68;0.97	0.9841	0.68;0.97
Trans	0.5714	0.37;0.76	0.9960	0.99;0.99	0.8889	0.65;0.98	0.9765	0.96;0.99
AAA	0.7000	0.51;0.85	0.9940	0.98;0.99	0.8750	0.68;0.97	0.9821	0.97;0.99

For each measured plane, the sensitivity and specificity values and their corresponding 95% CI interval is presented. Additionally, positive and negative predictive values are included, with their 95% CI interval
AP: Cases are participants with a anterior posterior mesurement of >30 mm
TRANS: Cases are participants with a transverse measurement of >30 mm
AAA: Cases are particpants with measurement in any plane of >30 mm

ISSN: 1471-2342