MDI Patient Abbreviation

Major Depression Inventory

The Major Depression Inventory (MDI) is a self-report mood questionnaire developed by the World Health Organisation. The instrument was constructed by a team led by Professor Per Bech, a psychiatrist based at Frederiksborg General Hospital in Denmark. The MDI differs from many other self-report inventories, such as the Beck Depression Inventory (BDI), because it is able to generate an ICD-10 or DSM-IV diagnosis of clinical depression in addition to an estimate of symptom severity.