Table 1.
Summary of patient characteristics.
| OVERALL (n = 172) | STAGE I (FIBROSIS <10%) (n = 68) | STAGE II (FIBROSIS 10–20%) (n = 58) | STAGE III (FIBROSIS 20–30%) (n = 37) | STAGE IV (FIBROSIS ≥30%) (n = 9) | P VALUE | |
|---|---|---|---|---|---|---|
| Age (yrs) | 66 ± 11 | 64 ± 13 | 68 ± 10 | 67 ± 11 | 68 ± 11 | 0.21 |
| Gender (% female) | 35.5% | 25.0% | 44.8% | 37.8% | 44.4% | 0.12 |
| Hypertension (%) | 58.7% | 54.1% | 55.2% | 67.6% | 77.8% | 0.10 |
| Diabetes (%) | 17.4% | 19.1% | 15.5% | 18.9% | 11.1% | 0.70 |
| Coronary Disease (%) | 21.5% | 20.6% | 13.8% | 32.4% | 33.3% | 0.16 |
| Congestive Heart Failure (%) | 10.5% | 10.3% | 12.1% | 5.4% | 22.2% | 0.47 |
| Persistent AF (%) | 46.5% | 38.2% | 46.6% | 51.4% | 88.9% | 0.01 |
| Number of PVAs encircled | 1.2 ± 1.3 | 1.4 ± 1.3 | 1.1 ± 1.3 | 1.1 ± 1.4 | 1.0 ± 1.5 | 0.26 |
| Ablation Scarring (%) | 13.1 ± 7.0 | 13.2 ± 6.2 | 12.5 ± 7.1 | 13.2 ± 8.1 | 15.2 ± 8.1 | 0.64 |