Table 1 Pre-match and post-match sample characteristics for primary outcome assessment
Variable | Before Propensity Score Matching | After Propensity Score Matching | ||||
|---|---|---|---|---|---|---|
AAD cohort (n = 920) | Ablation cohort (n = 1508) | Standardized difference | AAD cohort (n = 558) | Ablation cohort (n = 558) | Standardized difference | |
Age | 68 | 62 | −0.5075 | 65 | 65 | −0.0535 |
CCI score | 0.7 | 0.72 | 0.0445 | 0.7 | 0.7 | 0.0027 |
CHA2DS2-VASc score | 2.11 | 1.63 | −0.322 | 1.9 | 1.9 | 0.0168 |
Cardiovascular-related outpatient visits (pre-index) | 2.99 | 2.98 | −0.3613 | 1.2 | 1.28 | 0.06 |
Cardiovascular-related inpatient visits (pre-index) | 1.38 | 2.12 | 0.5151 | 1.75 | 1.83 | 0.0593 |
Female | 45.65% | 28.58% | 0.359 | 34.41% | 35.30% | −0.0188 |
Year of index date | ||||||
2008 | 20.11% | 13.26% | 19.53% | 15.05% | ||
2009 | 19.24% | 15.72% | 19.89% | 15.41% | ||
2010 | 19.24% | 19.76% | 18.46% | 18.10% | ||
2011 | 17.72% | 17.71% | 17.20% | 15.05% | ||
2012 | 13.80% | 18.04% | 12.72% | 19.18% | ||
2013 | 9.89% | 15.52% | 0.2698 | 12.19% | 17.20% | 0.2653a |
DCCV | 19.78% | 25.73% | 0.1422 | 24.37% | 23.84% | −0.0126 |
Ischemic heart disease | 17.07% | 14.46% | −0.0716 | 18.28% | 19.53% | 0.032 |
Heart failure | 8.37% | 9.81% | 0.0503 | 9.68% | 8.60% | −0.0373 |
Cardiomyopathy | 2.39% | 4.97% | 0.1374 | 3.58% | 3.23% | −0.0198 |
Valvular disease | 6.63% | 10.81% | 0.1485 | 8.42% | 7.89% | −0.0196 |
Wolff Parkinson | 0.11% | 2.19% | 0.1961 | 0.18% | 1.08% | 0.1137a |
Other arrhythmia | 10.33% | 22.35% | 0.3296 | 14.16% | 15.95% | 0.0501 |
Hypertension | 36.09% | 39.66% | 0.0736 | 41.22% | 42.29% | 0.0218 |
Diabetes | 9.57% | 12.00% | 0.0786 | 11.65% | 11.47% | −0.0056 |
Obstructive sleep apnea | 0.54% | 2.19% | 0.1421 | 0.90% | 1.25% | 0.0348 |
COPD | 5.54% | 6.76% | 0.0508 | 6.45% | 6.63% | 0.0072 |
Renal failure | 1.20% | 1.06% | −0.0127 | 0.54% | 0.72% | 0.0227 |
Stroke/TIA | 3.59% | 1.92% | −0.1018 | 2.69% | 2.15% | −0.035 |
Conduction system disease | 14.67% | 30.97% | 0.3958 | 19.53% | 20.97% | 0.0357 |
Hyperthyroidism | 0.98% | 0.20% | −0.102 | 0.18% | 0.36% | 0.0346 |
Rate control meds | 89.57% | 75.13% | −0.3855 | 84.77% | 85.84% | 0.0304 |
Anticoagulants | 60.98% | 76.46% | 0.3386 | 72.94% | 68.64% | −0.0947 |