Predictors of obstructive CAD on multivariable regression analysis in patients undergoing CAG with heart failure with reduced ejection fraction (HFrEF), n=260. ORs and 95% CIs are shown
| Adjusted ORs | 95% CI for OR | Significance | |
| Presence of angina symptoms | 4.3 | 2.3 to 8.1 | <0.00001 |
| Non-invasive testing performed | 3.6 | 1.8 to 7.1 | 0.0002 |
| Family history of premature CAD | 2.8 | 1.3 to 5.9 | 0.007 |
| Age more than 50 years | 2.0 | 1.1 to 3.7 | 0.03 |
CAD, coronary artery disease; CAG, coronary angiography.