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Original Research

Determining 30-day readmission risk for heart failure patients: the Readmission After Heart Failure scale

, , , &
Pages 127-141 | Published online: 09 Apr 2018

Figures & data

Figure 1 Flowchart of data exclusions used to create the Readmission After Heart Failure risk scale.

Note: *ICD-9 codes for heart failure: 428.0, 428.1, 428.20, 428.21, 428.22, 428.23, 428.30, 428.31, 428.32, 428.33, 428.40, 428.41, 428.42, 428.43, and 428.9.
Abbreviation: ICD, International Classification of Disease.
Figure 1 Flowchart of data exclusions used to create the Readmission After Heart Failure risk scale.

Table 1 Demographic and comorbidities data involving 642,448 heart failure patients of derivation cohort

Table 2 Demographic and comorbidities data involving 365,359 heart failure patients of validation cohort

Figure 2 Readmission rates by demographic and clinicopathological characteristics among heart failure patients of the derivation cohort.

Notes: Anemia combines chronic blood loss anemia and iron deficiency anemia. Diabetes combines complicated and uncomplicated diabetes.
Abbreviations: AIDS, acquired immunodeficiency syndrome; CPD, chronic pulmonary disease; FED, fluid and electrolyte disorder; LOS, length of stay; PCD, pulmonary circulation disorder; PUD, peptic ulcer disease; PVD, peripheral vascular disease.
Figure 2 Readmission rates by demographic and clinicopathological characteristics among heart failure patients of the derivation cohort.

Figure 3 Readmission rates by demographic and clinicopathological characteristics among heart failure patients of the validation cohort.

Notes: Anemia combines chronic blood loss anemia and iron deficiency anemia. Diabetes combines complicated and uncomplicated diabetes.
Abbreviations: AIDS, acquired immunodeficiency syndrome; CPD, chronic pulmonary disease; FED, fluid and electrolyte disorder; LOS, length of stay; PCD, pulmonary circulation disorder; PUD, peptic ulcer disease; PVD, peripheral vascular disease.
Figure 3 Readmission rates by demographic and clinicopathological characteristics among heart failure patients of the validation cohort.

Table 3 Univariate and multivariate analyses of factors predicting readmission for heart failure patients of the derivation cohort

Table 4 Univariate and multivariate analyses of factors predicting readmission for heart failure patients of the validation cohort

Figure 4 Derivation cohort.

Notes: (A) Percent readmission vs RAHF risk score for the derivation cohort. (B) Plot of residuals for observed vs expected RAHF risk scores for the derivation cohort.
Abbreviation: RAHF, Readmission After Heart Failure.
Figure 4 Derivation cohort.

Table 5 Values for components of Readmission After Heart Failure risk scale

Figure 5 Validation cohort.

Notes: (A) Percent readmission vs RAHF risk score for the validation cohort. (B) Plot of residuals for observed vs expected RAHF risk scores for the validation cohort.
Abbreviation: RAHF, Readmission After Heart Failure.
Figure 5 Validation cohort.