a strong trendp = 0.05
These included female sex (OR 1.31, 95% CI 1.07–1.60, p = 0.001), previous CABG (OR 1.6, 95% CI 1.18–2.17, p = 0.03) and atrial fibrillation (OR 1.84, 95% CI 1.47–2.29, p < 0.001) Patients with renal dysfunction were also at increased risk of readmission with a strong trend towards significance (OR 1.40, 95% CI 1.00 to 1.96, p = 0.05).