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Table 3 CTA findings of the patients with R-ACAOS

From: Prognostic value of dual-source computed tomography (DSCT) angiography characteristics in anomalous coronary artery from the opposite sinus (ACAOS) patients: a large-scale retrospective study

 Stenosis < 50%
(n = 90)
Stenosis ≥50% (n = 92)P value
Age, years62.1 ± 11.657.0 ± 13.60.0018*
CAD, n (%)44 (48.9%)29 (32.2%)0.0251
Myocardium bridge, n (%)19(21.1%)23(25.6%)0.6551
High-risk CCTA sign
 HW ratio1.83 ± 0.552.04 ± 0.720.0294**
 Length of narrowing (cm)2.35 ± 1.272.74 ± 0.960.0013**
 Angle at take-off (°)41.4 ± 21.733.2 ± 17.40.0238**
 Shared ostium, n (%)60 (66.7%)68 (73.9%)0.364
Ratio with vessels
 Ascending Aorta19.66 ± 6.9732.59 ± 26.30< 0.001**
 Left Main2.56 ± 0.743.99 ± 1.07< 0.001**
 Left Anterior Descending1.90 ± 0.562.95 ± 0.96< 0.001**
 Left Circumflex1.70 ± 0.512.66 ± 0.88< 0.001**
Vessel routes, n (%)0.6588
 Above the PV9(10.0%)13 (14.1%) 
 Below the PV81(90.0%)79 (85.9%) 
  1. HW ratio: height to width ratio on the view vertical to the proximal stenosis vessel; Above the PV: the route starts at a suprapulmonic level and courses above the pulmonary valve; Below the PV: the route starts at a parapulmonic or subpulmonic level and courses below the pulmonic valve
  2. * The difference was tested by Student-t test
  3. ** The difference was tested by Wilcox test for the obvious outlies found on the Q-Q plot
  4. The P value is for testing the difference of severity among three type of vessel routes