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Internal and external validity of attention-deficit hyperactivity disorder in a population-based sample of adults.
BACKGROUND Follow-up studies of childhood ADHD have shown persistence of the disorder into adulthood, but no epidemiological data are yet available. METHOD ADHD DSM-IV symptoms were obtained byExpand
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Content validity, construct validity, and reliability of the WHOQOL-Bref in a population of Dutch adult psychiatric outpatients
In this study, the psychometric properties of a quality of life scale, the WHOQOL-Bref, were examined in a population of 533 Dutch adult psychiatric outpatients. Participants underwent twoExpand
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Association between antidepressant drug use and hyponatraemia: a case-control study.
AIMS To estimate the risk of, and risk factors for, hyponatraemia associated with the use of selective serotonin reuptake inhibitors (SSRIs) compared with the use of other antidepressant drugs. Expand
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Anxiety and mood disorders in narcolepsy: a case-control study.
INTRODUCTION Narcolepsy is a primary sleeping disorder with excessive daytime sleepiness and cataplexy as core symptoms. There is increasing interest in the psychiatric phenotype of narcolepsy.Expand
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Psychotic symptoms in narcolepsy: phenomenology and a comparison with schizophrenia.
OBJECTIVE Patients with narcolepsy often experience pervasive hypnagogic hallucinations, sometimes even leading to confusion with schizophrenia. We aimed to provide a detailed qualitative descriptionExpand
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High prevalence of eating disorders in narcolepsy with cataplexy: a case-control study.
STUDY OBJECTIVES To study the prevalence of and symptoms of eating disorders in patients with narcolepsy. DESIGN We performed a case-control study comparing symptoms of eating disorders in patientsExpand
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The relationship between dimensional personality models and quality of life in psychiatric outpatients
This study examines the relationship between personality and quality of life (QOL) in psychiatric outpatients (N=495). Personality was conceptualized using two-dimensional models, respectively, theExpand
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Validation of the WHO Quality of Life assessment instrument (WHOQOL-100) in a population of Dutch adult psychiatric outpatients.
BACKGROUND Research concerning the psychometric properties of the WHO Quality of Life Assessment Instrument (WHOQOL-100) in general populations of psychiatric outpatients has not been performedExpand
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The structure of common psychiatric symptoms: how many dimensions of neurosis?
In order to replicate and elaborate the two-dimensional model of depression and anxiety underlying the structure of common psychiatric symptoms proposed by Goldberg et al. (1987), we carried outExpand
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Quality of Life and Psychopathology: Investigations into their Relationship
Objective: Quality of life (QOL) has become a topic of growing interest in medical and psychiatric practice in general, and in research in particular. Although the body of knowledge about the complexExpand
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