Table 2.
Results of the univariate logistic regression analysis showing the association between the risks for developing atrial fibrillation in 89 dogs with dilated cardiomyopathy.
| Variable | Chi-square | Odds ratio | 95%CI | p |
|---|---|---|---|---|
| Breed | 7.79 | NA | NA | 0.050 |
| Dobermann pinscher vs. Great Dane | 5.53 | 0.07 | 0.01–0.64 | 0.019 |
| Labrador retriever vs. Great Dane | 5.35 | 0.05 | 0.01–0.64 | 0.021 |
| Other breeds vs. Great Dane | 2.78 | 0.15 | 0.02–1.39 | 0.095 |
| Sex (male) | 3.97 | 3.40 | 1.02–11.35 | 0.046 |
| Age (months) | 2.26 | 1.01 | 1.00–1.02 | 0.133 |
| BW (kg) | 12.96 | 1.09 | 1.04–1.14 | <0.001 |
| Treatment at admission | 1.75 | 1.79 | 0.75–4.28 | 0.186 |
| Concurrent diseases | 0.20 | 0.80 | 0.31–2.06 | 0.650 |
| CHF | 6.22 | 7.19 | 1.52–33.93 | 0.013 |
| LA (cm) | 18.82 | 3.94 | 2.12–7.34 | <0.001 |
| Ao (cm) | 9.55 | 5.92 | 1.92–18.26 | 0.002 |
| LA:Ao | 5.54 | 3.43 | 1.23–9.56 | 0.019 |
| LVDDn | 0.27 | 0.56 | 0.10–3.11 | 0.507 |
| LVSDn | 0.54 | 0.40 | 0.03–4.68 | 0.461 |
| FS (%) | 2.32 | 0.93 | 0.85–1.02 | 0.127 |
| E mitral (m/s) | 5.50 | 4.34 | 1.27–14.82 | 0.019 |
| RAE | 13.58 | 5.66 | 2.25–14.21 | <0.001 |
| TR | 6.98 | 3.40 | 1.37–8.45 | 0.008 |
BW, body weight; CHF, congestive heart failure; LA, left atrial diameter; Ao, aortic diameter; LA:Ao, left atrial diameter to aortic diameter ratio; LVDDn, left ventricular diastolic diameter normalized to body weight; LVSDn, left ventricular systolic diameter normalized to body weight; FS, Fractional shortening; E mitral, mitral valve maximal E wave velocity; RAE, right atrial enlargement; TR, tricuspid regurgitation; NA, not applicable.