Table 6.
Multiple logistic regression to control for potential confounders
| P | OR | AUC | Sensitivity (%) | Specificity (%) | |
|---|---|---|---|---|---|
| Main PA diameter ≥29 mm | 0.0196 | 4.8 | 0.93 | 77.4 | 89.6 |
| Left PA diameter ≥24 mm | 0.2160 | 2.6 | 0.92 | 77.4 | 87.5 |
| Right PA diameter ≥25 mm | 0.4461 | 1.9 | 0.91 | 73.6 | 93.8 |
| RDPA diameter ≥19 mm | 0.0059 | 7.0 | 0.93 | 83.0 | 85.4 |
| True RDPA diameter ≥16 mm | 0.0487 | 4.1 | 0.92 | 83.0 | 87.5 |
| True LDPA diameter ≥21 mm | 0.0075 | 15.5 | 0.93 | 79.2 | 91.7 |
| RV free wall ≥6 mm | 0.0303 | 30.5 | 0.95 | 81.0 | 91.9 |
| RV lumen ≥30 mm | 0.0915 | 5.8 | 0.95 | 92.9 | 73.0 |
| LV free wall ≥15 mm | 0.1607 | 5.2 | 0.95 | 85.7 | 83.8 |
| LV lumen ≥57 mm | 0.3945 | 3.0 | 0.94 | 76.2 | 88.9 |
| Hilar diameter ≥124 mm | 0.2968 | 2.2 | 0.92 | 81.1 | 75.0 |
| RV wall/LV wall ratio ≥0.32 | 0.0141 | 8.8 | 0.96 | 78.6 | 83.8 |
| RV lumen/LV lumen ratio ≥1.28 | 0.0196 | 28.8 | 0.95 | 85.7 | 86.1 |
| L apical artery/bronchus ratio ≥1.75 | 0.2851 | 3.5 | 0.92 | 75.5 | 87.5 |
| Hilar/thoracic ratio ≥0.52 | 0.0757 | 3.7 | 0.92 | 75.5 | 87.5 |
| Main PA/AA ratio ≥0.84 | 0.0208 | 6.0 | 0.93 | 73.6 | 91.7 |
| Main PA/DA ratio ≥1.29 | 0.0269 | 5.7 | 0.93 | 77.4 | 89.6 |
| IV septum bowing into LV (yes or no) | 0.1053 | 11.6 | 0.95 | 81.0 | 89.2 |
| Main PA/AA ratio >1 | 0.0085 | 9.1 | 0.93 | 86.8 | 79.2 |
Regression of the outcome variable (PH vs. no-PH) to the predictors:
ULN for each hypothesized predictor of PH, age, sex, ascending aorta diameter (AA), BSA, thoracic diameter (TD), and pulmonary wedge pressure (PWP) >15 mmHg.
Note: one logistic regression model was created for each hypothesized predictor of PAH. For example, the analysis in the first row above included the predictors: Main PA diameter ≥29, age, sex, AA, BSA, TD, and PWP >15. See table 1 for definitions of radiographic metrics.