A Latent Class Analysis of DSM-III-R Pathological Gambling Criteria in Middle-Aged Men: Association with Psychiatric Disorders.

Purpose: : This study was designed to empirically derive latent classes based on PG criteria and to assess the association between nongambling psychiatric disorders and specific classes.

Methods: : A total of 8138 community-based middle-aged men were surveyed, and 2720 were assessed for Diagnostic Interview Schedule, Version 3, Revised (DIS-III-R) pathologic gambling (PG). Latent class analysis (LCA) was applied to Diagnostic and Statistical Manual Version 3, Revised (DSM-III-R) criteria to identify gambling classes.

Lifetime and 12-month prevalence of psychiatric disorders in 8,169 male Vietnam War era veterans.

Objective: This study reports the prevalence of psychiatric disorders among a nationally distributed sample of Vietnam Era veterans assessed using standardized psychiatric interviewing methods.

Methods: In 1992, the National Institute of Mental Health Diagnostic Interview Schedule was administered by telephone to 8,169 middle-aged males who served in the military during the Vietnam era (1965-1975).

Results: Approximately 72% of respondents reported a lifetime history and 36% reported a 12-month history of at least one psychiatric disorder.

A twin study of the neuropsychological consequences of stimulant abuse.

Background: Previous studies document neuropsychological deficits associated with stimulant abuse, but findings are inconsistent.

Methods: We identified 50 twin pairs in which only 1 member had heavy stimulant abuse (cocaine and/or amphetamines) ending at least 1 year before the evaluation. The co-twin control research design controls for familial vulnerability and makes it easier to identify neuropsychological deficits that are consequences of stimulant abuse.

Does marijuana use have residual adverse effects on self-reported health measures, socio-demographics and quality of life? A monozygotic co-twin control study in men.

Aims: To assess the effects of former heavy marijuana use on selected aspects of health.

Design: A monozygotic co-twin control design was used to compare the health of former heavy marijuana using male monozygotic twins to that of their co-twins who never used marijuana significantly.

Setting: In-person survey and questionnaires.

The usefulness of subtraction ictal SPECT coregistered to MRI in single- and dual-headed SPECT cameras in partial epilepsy.

Purpose: To prove the clinical usefulness of SISCOM and compare SISCOM images derived from single- and dual-headed single-photon computed tomography (SPECT) cameras for localization of partial epileptic seizures.

Methods: We retrospectively studied 38 partial epilepsy patients, using subtraction SPECT coregistered to magnetic resonance imaging (MRI; SISCOM). SPECT imaging of the first 15 patients was performed by single-headed camera, and the next 23 patients by dual-headed camera.