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Table 4 Evaluation of heterogeneity of AUC across four studies (internal-external cross-validation)

From: A heart failure phenotype stratified model for predicting 1-year mortality in patients admitted with acute heart failure: results from an individual participant data meta-analysis of four prospective European cohorts

Study(k) HFrEF HFmrEF HFpEF
AUC(k)* AUCk AUC(k) AUCk AUC(k) AUCk
BIOSTAT-index 0.80 0.76 0.73 0.77 0.76 0.70
BIOSTAT-validation 0.77 0.84 0.79 0.69 0.76 0.75
TRIUMPH 0.78 0.80 0.75 0.80 0.75 0.68
COACH 0.79 0.76 0.75 0.74 0.73 0.78
Total 0.79 0.79 0.76 0.74 0.75 0.74
  1. *AUC estimated in other three cohorts after omitting study k
  2. AUC predicted in study k
  3. Weighted mean across four cohorts. See Royston et al. [18]