The psychiatric diagnostic screening questionnaire: Development, reliability and validity
Abstract
The Psychiatric Diagnostic Screening Questionnaire (PDSQ) is a self-report scale designed to screen for the most common DSM-IV axis I disorders encountered in outpatient mental health settings. We report the results of four studies of the PDSQ involving more than 2,500 subjects receiving outpatient mental health care. In two studies we examined the understandability of the items on the PDSQ. Items that initially were less well understood were rewritten, and all items of the final version of the scale were understood by more than 90% of the respondents. In the other two studies, the reliability and validity of the PDSQ subscales was examined. A priori criteria were established to guide the revision of subscales. The final version of the questionnaire contains 13 subscales (major depressive disorder [MDD], bulimia, post-traumatic stress disorder [PTSD], panic disorder, agoraphobia, social phobia, generalized anxiety disorder [GAD], obsessive-compulsive disorder [OCD], alcohol abuse/dependence, drug abuse/dependence, somatization, hypochondriasis, and psychosis), each of which achieved good to excellent levels of internal consistency, test-retest reliability, and discriminant, convergent, and concurrent validity.
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The Individual and Societal Burden of Treatment-Resistant Depression: An Overview
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The overall prevalence of different types of suicidal ideation was (22.6%), major depression was found in 20.0%, affectivity, psychosis and stress was found in 10.4%, 8.7% and 26.0% respectively. Female gender, major depression, stress, affectivity and psychosis and being in high school were significant (p < 0.05) predictors of suicidal ideation.
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Future studies are needed to study the progression from suicidal ideas to suicidal attempts and the factors associated with that progression.
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2022, Journal of Psychiatric ResearchDespite emerging evidence linking obsessive-compulsive disorder and symptoms (OCS) and nicotine dependence (ND), this comorbidity has received little research. To address this, the current investigation highlights evidence of this comorbidity in two epidemiologic datasets: (1) US nationally-representative survey (i.e., National Comorbidity Study-Replication; NCS-R), and (2) a psychiatric clinical epidemiology dataset (i.e., the Methods to Improve Diagnostic Assessment and Services; MIDAS). For NCS-R (n = 2088), interviews were carried as part of extensive data collection, including OCS symptom count and ND diagnosis. For MIDAS (n = 1257), as part of receiving mental health services at a US hospital outpatient treatment program, participants received diagnostic interviews, including evaluation of ND and obsessive-compulsive disorder (OCD), with OCS being characterized by self-reported symptom count. Results from NCS-R indicate that rates of current ND increased from 3.1% to 10.8% as OCS symptom count increased. Results from the MIDAS clinical sample exhibited a similar trend, but with higher overall figures compared to the US-representative NCS-R sample, with rates of current ND increasing from 18.3% to 41.4% as OCS count increased. In both datasets, OCS was positively associated with current (but not prior) ND after adjusting for psychiatric and sociodemographic covariates. For MIDAS, after adjusting for covariates, OCD diagnostic status was not associated with ND. Findings from this study lend support for the OCS-ND comorbidity in clinical and non-clinical populations and suggests that the OCS-ND link may be obscured when obsessive-compulsive phenomena is modeled as a dichotomous diagnostic variable versus as a dimensional construct.