Taking Account of Inobservable Periods in Longitudinal Drug Treatment Follow-up

"Exposition to at least one drug belonging to the following classes during the last 12 months before index date :~* Benzodiazepine derivatives (N05BA)~* Benzodiazepine derivatives (N05CD)~* Benzodiazepine related drugs (N05CF)"

"Exposition to at least one drug belonging to the following classes during the last 12 months before index date :~* Antipsychotics (N05A)~* Antiepileptics with the exception of clonazepam (N03)~* Drugs used for alcohol dependance (N07BB)~* Drugs used for opioids dependance (N07BC)"

Medical consultation without prescription of any drugs of interest

"* Gender~* Birthdate~* Department of residence~* City of residence~* Vital status (month and date of death)~* Affiliation to Universal Health Coverage~* Number of chronic long-term illness, medical diagnostic or pathology (CIM 10 code), onset and end dates~* Drugs reimbursements (Date of care onset, drugs identification code, number of box delivered)~* Data collected from medicalisation program of information system and private and public home care structures~* Medical consultations, medical acts ( Common Classification of Medical Acts nomenclature)"