Table 3.
Univariate Predictors of Global T1.
| Β-coefficienta | Pvalue | |
| AF during CMRI | −22 (−35, −11) | 0.000 |
| Age (per decade) | −4 (−9, 2) | 0.21 |
| Sex (female) | −28 (−39, −17) | 0.000 |
| Paroxysmal AFb | 16 (5, 27) | 0.005 |
| Time since AF diagnosis (per 12 months) | 0.5 (−0.4, 1.3) | 0.26 |
| Lone AF | 14 (−4, 33) | 0.13 |
| Stroke | 14 (−14, 42) | 0.32 |
| Body mass index (per 10 kg/m²) | −11, (−21, −2) | 0.02 |
| Hypertension | 2 (−11,14) | 0.80 |
| Coronary artery disease | 1 (−13,16) | 0.85 |
| Diabetes mellitus | −3, (−19, 13) | 0.72 |
| Congestive heart failure | 26 (5, 47) | 0.016 |
| Renal dysfunction (eGFR<60) | −14 (−29, 1) | 0.06 |
| Left atrial size (per 10 mm) | −2 (−9, 5) | 0.64 |
| LV ejection fraction (per 10%) | 4, (−2, 9) | 0.16 |
| LV diastolic diameter (per 10 mm) | 8 (−1, 16) | 0.08 |
| LV interventricular septum thickness (mm) | 0.8 (−2.2, 3.7) | 0.61 |
| LV posterior wall thickness (mm) | 2.2 (−1.2, 5.7) | 0.20 |
a
The B-coefficient is the variation from the mean of the global T1 in milliseconds given the specified change in the independent variable.g
b
Persistent AF is the reference group. AF, atrial fibrillation; CMRI, cardiac magnetic resonance imaging; eGFR, estimated glomerular filtration rate; LV, left ventricular; T1, post-contrast T1 relaxation time.