Factor Analysis of the DePaul Symptom Questionnaire: Identifying Core Domains.

The present study attempted to identify critical symptom domains of individuals with Myalgic Encephalomyelitis (ME) and chronic fatigue syndrome (CFS). Using patient and control samples collected in the United States, Great Britain, and Norway, exploratory factor analysis (EFA) was used to establish the underlying factor structure of ME and CFS symptoms. The EFA suggested a four-factor solution: post-exertional malaise, cognitive dysfunction, sleep difficulties, and a combined factor consisting of neuroendocrine, autonomic, and immune dysfunction symptoms.

Predictors of HIV-risk sexual behavior: examining lifetime sexual and physical abuse histories in relation to substance use and psychiatric problem severity among ex-offenders.

Background: Lifetime histories of sexual and physical abuse have been associated with increased HIV-risk sexual behavior, and some studies have identified other variables associated with these relationships. However, there is a dearth of literature that has critically examined abuse histories and HIV-risk sexual behavior in relation to these other variables.

Objectives: Predictors of HIV-risk sexual behavior were analyzed among a sample of ex-offenders who were completing inpatient substance dependence treatment to identify factors related to increases in HIV-risk sexual behavior beyond that of abuse histories.