Table 2.

Predictor outputs for frailty risk prediction model (dependent variables)

Name	Time span	Description	Comments
In-hospital mortality	Current spell	Indicates if the discharge method was death
30 day non-elective readmission	30 days from discharge	Indicates if the patient had an emergency admission with admission date between 1 and 30 days following the discharge date of the index admission	Spells that ended in death are excluded from the analysis
Long length of stay	Current spell	Upper quartile length of hospital stay for country