Fig. 1

Cumulative incidence plots of mortality within 3 years post-discharge for patients without cancer diagnoses stratified by quartiles (Q1-Q4) of a: FI-OutRef, b: Age, c: No. of chronic diag., d: New chronic diag and e: New acute admissions. For proportion of cumulative mortality including 95% confidence interval (see Additional file 2: Appendix 2) Abbreviations: FI-OutRef: Frailty index by the number of admission laboratory tests outside the reference interval. No. of chronic diag: number of unique chronic diagnoses within the 10-year period prior to the index admission. New chronic diag: The number of chronic diagnoses given in the 2-year period preceding the index admission. New acute admissions: Number of new acute admissions within the 2-year period preceding the index admission. 1) Note: FI-OutRef includes 2,442 of the 2,965 discharged patients who had 10 or more standard laboratory tests analysed at admission