The adult emergency service of the Nancy CHRU welcomes an average of 135 visits per day. Approximately 18% are patients over 75 years old, among them 45% go home at the end of their care. The mobile geriatric liaison team intervenes with these patients at the request of the emergency doctors before they return home in order to identify their fragility and implement appropriate measures.

We wish to know the characteristics of these avoidable passages in order to propose preventive measures upstream of these passages. To do this, we need to know the characteristics of those patients with an avoidable passage.

Inclusion Criteria:

• age>=75 years old
• admitted at emergency room between first april 2019 and 30 september 2019
• outpatients

Exclusion Criteria:

• inpatients
• discharged patients
• patients discharged against medical advice
• patients brought by police

- Patients over 75 years of age, with a visit to the emergency department between April 1, 2019 and September 30, 2019, with a non-hospitalization at the end of their visit to the emergency department.