Inclusion Criteria:  are ≥40 years of age; have undergone inpatient semi-urgent, urgent, or emergency surgery and the most responsible physician has decided to discharge the patient; are on the day of being discharged home or are within 24 hours after discharge home without having obtained acute hospital care since discharge; and provide informed consent to participate.  Exclusion Criteria:  went to rehabilitation or convalescent care for more than 7 days after undergoing surgery; are unable to communicate with research staff, complete study surveys, or undertake an interview using a tablet computer due to cognitive, visual, or hearing impairment; or reside in an area without cellular network coverage.