Multivariate Regression Model to Predict Changes in Peak MBF and MFR
| Peak MBF | MFR* | |||||||
| Characteristic | Coefficient b value | SE | Standardized β-coefficient | P | Coefficient b value | SE | Standardized β-coefficient | P |
| Maximal wall thickness | −0.37 | 0.11 | −0.45 | 0.003 | −0.58 | 0.13 | −0.63 | 0.0001 |
| Change in HR | 0.018 | 0.005 | 0.46 | 0.002 | ||||
↵* Corrected for RPP.
Data were centered to their means (2.2 cm and 26 beats/min, respectively) to better fit polynomial regression model, in which peak MBF and MFR decrease by 0.037 mL/min/g and 0.058, respectively, for every 1-mm increase in maximal wall thickness over 2.2 cm. In contrast, peak MBF increases by 0.018 m/min/g for every heartbeat increase of change in HR over 26 beats per min. Only independent variables that attained P values less than 0.05 are listed.