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. Author manuscript; available in PMC: 2013 Jul 1.
Published in final edited form as: J Card Fail. 2012 Jul;18(7):534–540. doi: 10.1016/j.cardfail.2012.05.003

Table-3.

Rate ratios for readmission for all other covariates in the multivariable model

Readmission risk factor Rate Ratio1 (95% confidence interval) p-value
LVEF 0.73 (0.6, 0.9) 0.01
Age 0.71 (0.6, 0.9) 0.01
Initial length of stay 1.28 (1.1, 1.6) 0.01
Admission hemoglobin 0.58 (0.5, 0.7) <0.001
SBP 1.0 (0.9, 1.2) 0.59
Creatinine 1.2 (0.8, 1.9) 0.29
BMI 0.8 (0.6, 1.1) 0.12
Gender (male vs female) 1.16 (0.9, 1.5) 0.26
CAD 0.98 (0.7, 1.4) 0.90
Cardiomyopathy (ischemic vs. nonischemic) 1.14 (0.8, 1.6) 0.48
Cardiomyopathy (other vs. nonischemic) 1.18 (0.8, 1.7) 0.42
Diabetes 1.1 (0.8, 1.3) 0.68
Discharge beta-blocker 1.3 (0.9, 2.0) 0.23
Discharge ARB or ACEI 0.8 (0.6, 1.1) 0.19
Sodium 1.1 (0.9, 1.4) 0.39
1

Rate ratios are for a 2 standard deviation increase for these continuously measured risk factors (2 SD= LVEF 21%, age 29 years, Initial LOS 22 days, Admission Hemoglobin 3.8 g/dL, High SBP 21.9 mm Hg, Creatinine 2.7 mg/dL, BMI 16 kg/cm2, Sodium 7.8 mg/dl), the remaining covariates were dichotomized or trichotomized (cardiomyopathy).

LVEF: Left ventricular ejection fraction; SBP: systolic blood pressure; BMI: Body mass index; CAD: Coronary Artery Disease; ARB: Angiotensin receptor blocker; ACEI: Angiotensin converting enzyme inhibitor.