Table 1. Baseline Patient Characteristics.
Statistical tests: ANOVA for numeric variables and chi-squared for categorical variables; significance denoted by * for p<0.05, ** for p<0.01, *** for p<0.001; Note: sample sizes for a particular measurement may be different from the overall sample size due to missing data
| SF (N=32) | ST (N=232) | CA (N=59) | ||||
|---|---|---|---|---|---|---|
| n | Percent | n | Percent | n | Percent | |
| Age (mean, SD) | 63.8 | 11.5 | 62.9 | 10.9 | 63.7 | 12.6 |
| Male Sex*** | 17 | 53.1 | 128 | 55.2 | 16 | 27.1 |
| Left Ventricular Ejection Fraction (%) | ||||||
| <35% | 2 | 6.3 | 9 | 3.9 | 0 | 0.0 |
| 35-44% | 3 | 9.4 | 14 | 6.0 | 1 | 1.7 |
| 45-54% | 4 | 12.5 | 25 | 10.8 | 9 | 15.3 |
| 55% and higher | 15 | 46.9 | 116 | 50.0 | 35 | 59.3 |
| Unknown | 8 | 25.0 | 68 | 29.3 | 14 | 23.7 |
| Left Atrial Size, cm (mean, SD) | 3.8 | 0.7 | 3.9 | 0.8 | 3.9 | 0.7 |
| Medical History | ||||||
| Congestive Heart Failure | 5 | 15.6 | 26 | 11.2 | 9 | 15.3 |
| Hypertension | 22 | 68.8 | 154 | 66.4 | 44 | 74.6 |
| Diabetes | 5 | 15.6 | 50 | 21.6 | 9 | 15.3 |
| Stroke/Transient Ischemic Attack | 4 | 12.5 | 19 | 8.2 | 6 | 10.2 |
| Vascular Disease* | 13 | 40.6 | 57 | 24.6 | 22 | 37.3 |
| Renal Disease* | 3 | 9.4 | 7 | 3.0 | 6 | 10.2 |
| Liver Disease | 0 | 0.0 | 2 | 0.9 | 0 | 0.0 |
| Pre-ablation Medications | ||||||
| Antiarrhythmic drugs | 23 | 71.9 | 145 | 62.5 | 50 | 84.8 |
| Beta-blockers | 18 | 56.3 | 131 | 56.5 | 24 | 40.7 |
| CHA2DS2-VASc Score | ||||||
| 0 | 0 | 0.0 | 17 | 7.3 | 2 | 3.4 |
| 1 | 6 | 18.8 | 52 | 22.4 | 11 | 18.6 |
| 2 | 9 | 28.1 | 58 | 25.0 | 11 | 18.6 |
| 3 | 6 | 18.8 | 49 | 21.1 | 10 | 17.0 |
| 4 | 8 | 25.0 | 30 | 12.9 | 13 | 22.0 |
| 5 | 1 | 3.1 | 18/ | 7.8 | 6 | 10.2 |
| 6 | 2 | 6.3 | 5 | 2.2 | 5 | 8.5 |
| 7 | 0 | 0.0 | 3 | 1.3 | 1 | 1.7 |
| Follow-up Time After Ablation | ||||||
| Patients with ≥ 1 Year | 32 | 100.0 | 232 | 100.0 | 58 | 98.3 |
| Patients with ≥ 2 Years*** | 32 | 100.0 | 145 | 62.5 | 52 | 88.1 |