Table 5.
Number of Ablations by Utah Stage of LA Fibrosis
| No. of AF Ablations in 5‐y Period | Utah Stages of LA Fibrosis | P Value for Trend | |||
|---|---|---|---|---|---|
| I | II | III | IV | ||
| Mean±SD | 1.28±0.56 | 1.32±0.51 | 1.34±0.48 | 1.79±0.77 | |
| Proportional odds ratio (95% CI)a | 1.00 | 1.52 (0.78–2.95) | 1.77 (0.82–3.82) | 5.19 (2.12–12.69) | <0.001 |
| Adjusted proportion, %b | |||||
| 1 Ablation | 76 | 69 | 66 | 43 | |
| 2 Ablations | 22 | 29 | 31 | 50 | |
| 3 or 4 Ablations | 2 | 2 | 3 | 8 | |
Values represent the total number of AF ablations that were observed while observing patients retrospectively and observationally for up to 5 years. AF indicates atrial fibrillation; CI, confidence interval; LA, left atrial.
a
Proportional odds ratio calculated from ordinal logistic regression model using full covariate adjustment (model 4).
b
Calculated using predictive margins after the multivariable‐adjusted ordinal logistic regression.