The investigators will examine the association between preoperative frailty and postoperative outcomes and resource utilization after emergency general surgery.
Study Type
OBSERVATIONAL
Enrollment
150,000
Participants will be defined as frail based on the Johns Hopkins ACG Frailty Defining Diagnoses Indicator, which will be applied to available health administrative data in the 3 years preceding index hospital admission. If no frailty defining diagnoses are present participants will be defined as not frail
Ottawa Hospital Research Institute
Ottawa, Ontario, Canada
Mortality
Mortality events will be identified from the registered person's database in Ontario from the date of surgery to 365 days after surgery, at which time participants will be censored
Time frame: 365 days (from date of surgery)
Hospital length of stay
Number of days in hospital from date of surgery to 365 days after surgery
Time frame: day of surgery to 365 days after surgery
Intensive care unit admission
Presence of a special care unit admission from the Discharge abstract database from the date of surgery to 30 days after surgery
Time frame: from date of surgery to 30 days after surgery
Institutional discharge
Discharge disposition to an institution in the discharge abstract database
Time frame: Date of surgery to hospital discharge or 365 days after surgery (at which time participants will be censored)
Costs
Total costs incurred by the provincial health care system from the day of surgery to 365 days after surgery
Time frame: day of surgery to 365 days after surgery
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