The natural history of lifetime psychiatric disorders in patients with obsessive-compulsive disorder followed over half a century.

Objective: Few long-term studies have examined the life-time prevalence of comorbid psychiatric conditions in patients with obsessive-compulsive disorder (OCD). We therefore studied the frequency of comorbid psychiatric disorders, and their relation to onset and prognosis, in patients with OCD who were followed for almost half a century.

Methods: During 1947-1953, 285 OCD patients were admitted as inpatients to a university hospital in Gothenburg, Sweden.

Prevalence of obsessive-compulsive disorder in relation to depression and cognition in an elderly population.

Objectives: We examined the 1-month prevalence of obsessive-compulsive disorder (OCD) and obsessive-compulsive symptoms (OCS) not fulfilling OCD criteria in relation to sex, age, social and mental function, comorbid depression, and cognitive functioning in an elderly nondemented population.

Settings And Participants: Population-based sample (N = 900), stratified into two age groups: 70-year-olds (335 women and 224 men) and those aged 78 and above (341 women).

Measurements: Semi-structured interviews.

The prevalence of psychotic symptoms and paranoid ideation in non-demented population samples aged 70-82 years.

Objectives: Recent population(Q3) studies have reported an approximate 10% prevalence of psychotic symptoms among elderly aged 85 years and older. Psychotic symptoms may be less prevalent among younger elderly. We examined the prevalence of psychotic symptoms in a population-based sample of non-demented elderly aged 70-82 years.

Prevalence of social phobia in non-demented elderly from a swedish population study.

Objective: To examine the prevalence of social phobia, and how the different Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) diagnostic components of social phobia influence prevalence rates, among a population sample aged 70 years and older.

Design: A general population sample was investigated in 2000-2001 with semistructured psychiatric examinations, including the Comprehensive Psychopathological Rating Scale, the Mini International Neuropsychiatric Interview, the Global Assessment of Functioning (GAF) scale, and the Mini Mental State Examination.

Setting: General population Participants: Randomized sample of 914 nondemented elderly, response rate 68%.