Table 2.
Risk factors of incident atrial arrhythmias
| Unadjusted HR | P value | Adjusted HR | P value | |
|---|---|---|---|---|
| Age | 1.02 (1.00–1.04) | .055 | 1.02 (0.99–1.05) | .15 |
| Female sex | 0.68 (0.42–1.11) | .13 | 0.64 (0.37–1.09) | .10 |
| Black | 1.17 (0.64–2.13) | .62 | 1.13 (0.61–2.08) | .70 |
| Heart failure | 3.43 (1.38–8.57) | .01 | 1.99 (0.77–5.18) | .16 |
| Mild left atrial dilation | 2.04 (1.12–3.68) | .02 | 1.99 (1.06–3.75) | .03 |
| Moderate/severe left atrial dilation | 3.59 (1.94–6.66) | <.001 | 3.06 (1.58–5.92) | <.001 |
Hypertension, hyperlipidemia, diabetes, coronary heart disease, heart failure, chronic kidney disease, previous stroke/transient ischemic attack, and left atrial size were each evaluated as risk factors for the specified arrhythmia in unadjusted analysis. Only those variables that were associated with the arrhythmia endpoint at P <.20 were further assessed in multivariable analysis. Age, sex, and race were forced into the multivariable analysis.
HR = hazard ratio.