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International Journal of Methods in Psychiatric Research

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https://www.readbyqxmd.com/read/27910162/effects-of-sample-size-and-distributional-assumptions-on-competing-models-of-the-factor-structure-of-the-panss-and-bprs
#1
Stephen J Tueller, Kiersten L Johnson, Kevin J Grimm, Sarah L Desmarais, Brian G Sellers, Richard A Van Dorn
Factor analytic work on the Positive and Negative Syndrome Scale (PANSS) and Brief Psychiatric Rating Scale (BPRS) has yielded varied and conflicting results. The current study explored potential causes of these discrepancies. Prior research has been limited by small sample sizes and an incorrect assumption that the items are normally distributed when in practice responses are highly skewed ordinal variables. Using simulation methodology, we examined the effects of sample size, (in)correctly specifying item distributions, collapsing rarely endorsed response categories, and four factor analytic models...
December 2, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27862574/person-misfit-on-the-inventory-of-depressive-symptomatology-low-quality-self-report-or-true-atypical-symptom-profile
#2
Judith M Conijn, Philip Spinhoven, Rob R Meijer, Femke Lamers
Person misfit on a self-report measure refers to a response pattern that is unlikely given a theoretical measurement model. Person misfit may reflect low quality self-report data, for example due to random responding or misunderstanding of items. However, recent research in the context of psychopathology suggests that person misfit may reflect atypical symptom profiles that have implications for diagnosis or treatment. We followed-up on Wanders et al. (Journal of Affective Disorders, 180, 36-43, 2015) who investigated person misfit on the Inventory of Depressive Symptomatology (IDS) in the Netherlands Study of Depression and Anxiety (n = 2,981)...
November 14, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27859934/classifying-child-and-adolescent-psychiatric-disorder-by-problem-checklists-and-standardized-interviews
#3
Michael H Boyle, Laura Duncan, Kathy Georgiades, Kathryn Bennett, Andrea Gonzalez, Ryan J Van Lieshout, Peter Szatmari, Harriet L MacMillan, Anna Kata, Mark A Ferro, Ellen L Lipman, Magdalena Janus
This paper discusses the need for research on the psychometric adequacy of self-completed problem checklists to classify child and adolescent psychiatric disorder based on proxy assessments by parents and self-assessments by adolescents. We put forward six theoretical arguments for expecting checklists to achieve comparable levels of reliability and validity with standardized diagnostic interviews for identifying child psychiatric disorder in epidemiological studies and clinical research. Empirically, the modest levels of test-retest reliability exhibited by standardized diagnostic interviews - 0...
November 14, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27862603/defining-the-hidden-evidence-in-autism-research-forty-per-cent-of-rigorously-designed-clinical-trials-remain-unpublished-a-cross-sectional-analysis
#4
Konstantin Mechler, Georg F Hoffmann, Ralf W Dittmann, Markus Ries
Autism spectrum disorders (ASD) have a prevalence of up to 2.7% and show significant rates of comorbidities. Pharmacological treatment can be difficult. New treatment options are needed, several are currently under investigation. Publication bias presents a major problem in current clinical research. This study was designed to quantify publication bias in rigorously designed ASD research. The database at ClinicalTrials.gov was searched for all completed randomized controlled clinical trials investigating interventions in ASD and their results made public...
November 9, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27862575/measuring-the-icd-11-adjustment-disorder-concept-validity-and-sensitivity-to-change-of-the-adjustment-disorder-new-module-questionnaire-in-a-clinical-intervention-study
#5
Rahel Bachem, Axel Perkonigg, Dan J Stein, Andreas Maercker
Adjustment disorder (AjD) is a frequent but under-researched diagnosis due in part to a lack of specific symptom criteria and adequate tools of measurement. The ICD-11 for the first time proposes a positive symptom catalogue to define AjD. This study presents a validation of the Adjustment Disorder - New Module (ADNM), the first symptom severity measure for AjD according to the ICD-11 concept. Validity and sensitivity to change were investigated in a sample of 190 individuals with a DSM-IV diagnosis of AjD...
November 9, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27862559/a-new-statistical-model-for-the-day-reconstruction-method
#6
Paul H Lee, Andy C Y Tse, Ka Yiu Lee
The Day Reconstruction Method (DRM) is a method to measure one's subjective affective status by soliciting information in a questionnaire about the previous day's activities. We developed a new model to examine the association of daily activities, the friendliness of interacting partners, and time-of-day on net affect scores among 10,377 adults participating in the World Health Organization's Study on global ageing and adult health (SAGE). A multilevel regression was fitted and the time-of-day effect was modeled by restricted cubic spline...
November 9, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27859868/preferences-of-psychiatric-practitioners-for-core-symptoms-of-major-depressive-disorder-a-hidden-conjoint-analysis
#7
Matthias W Riepe, Peter Gritzmann, Andreas Brieden
According to ICD-10 and DSM-V, symptoms of depressive disorder are considered to be equally important for severity judgment. It was the goal to investigate the weight of selected symptom complexes for severity judgment. In workaday life severity judgment results from an overall impression rather than from calculating severity in different symptom complexes, separately. In fact, the drivers for overall judgment may not be known explicitly to the psychiatrist himself. A method of choice to resolve this is conjoint analysis...
November 9, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27790822/motivation-treatment-engagement-and-psychosocial-outcomes-in-outpatients-with-severe-mental-illness-a-test-of-self-determination-theory
#8
Eline C Jochems, Hugo J Duivenvoorden, Arno van Dam, Christina M van der Feltz-Cornelis, Cornelis L Mulder
Currently, it is unclear whether Self-Determination Theory (SDT) applies to the mental health care of patients with severe mental illness (SMI). Therefore, the current study tested the process model of SDT in a sample of outpatients with SMI. Participants were 294 adult outpatients with a primary diagnosis of a psychotic disorder or a personality disorder and their clinicians (n = 57). Structural equation modelling was used to test the hypothesized relationships between autonomy support, perceived competence, types of motivation, treatment engagement, psychosocial functioning and quality of life at two time points and across the two diagnostic groups...
October 27, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27790784/psychosis-risk-screening-validation-of-the-youth-psychosis-at-risk-questionnaire-brief-in-a-community-derived-sample-of-adolescents
#9
Eduardo Fonseca-Pedrero, Javier Ortuño-Sierra, Edurne Chocarro, Felix Inchausti, Martin Debbané, Julio Bobes
There have been several attempts to identify individuals potentially at high risk for psychotic-spectrum disorders using brief screening measures. However, relatively few studies have tested the psychometric properties of the psychosis screening measures in representative samples of adolescents. The main purpose of the present study was to analyse the prevalence, factorial structure, measurement invariance across gender, and reliability of the Youth Psychosis At-Risk Questionnaire - Brief (YPARQ-B) in a community-derived sample of adolescents...
October 27, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27774717/evaluation-and-comparison-of-tools-for-diagnosing-problematic-prescription-opioid-use-among-chronic-pain-patients
#10
Merav Kovatch, Daniel Feingold, Odelia Elkana, Shaul Lev-Ran
Prescription opioid medications are commonly used for the treatment of chronic pain. Assessments of problematic opioid use among pain patients are inconsistent across studies, partially due to differences between various measures. Therefore, the most appropriate measure to use is often unclear. In this study we assessed problematic opioid use in a sample of 551 individuals receiving treatment for chronic pain, using three questionnaires: the Alcohol Use Disorder and Associated Disabilities Interview Schedule - Fourth Edition (AUDADIS-IV), the Current Opioid Misuse Measure (COMM) questionnaire and Portenoy's criteria (PC)...
October 23, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27766715/the-tianjin-mental-health-survey-tjmhs-study-rationale-design-and-methods
#11
Huifang Yin, Michael R Phillips, Klaas J Wardenaar, Guangming Xu, Johan Ormel, Hongjun Tian, Robert A Schoevers
Mental health in China is of growing concern to both policy-makers and researchers. The Tianjin Mental Health Survey (TJMHS) was conducted between July 2011 and March 2012 to assess the prevalence and risk factors of mental disorders in the context of recent economic growth and other socio-demographic changes in Tianjin, a municipality of 13 million on China's eastern seaboard. A multistage cluster random sample selected using probability proportionate to size methods participated in a two-phase screening procedure: 11,748 subjects 18 or older were screened for risk of psychopathology and then an enriched risk-proportional subsample of 4,438 subjects was interviewed by psychiatrists using an expanded Chinese version of the Structured Clinical Interview for Diagnostic and Statistical Manual, Fourth Edition (DSM-IV) Axis I disorders (SCID)...
October 21, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27766706/age-at-onset-subsets-of-bipolar-i-disorders-a-critical-insight-into-admixture-analyses
#12
Claire Montlahuc, Emmanuel Curis, Sarah Flora Jonas, Frank Bellivier, Sylvie Chevret
Gaussian mixture analysis is frequently used to model the age-at-onset (AAO) in bipolar I disorder and identify homogeneous subsets of patients. This study aimed to examine whether, using admixture analysis of AAO, cross-sectional designs (which cause right truncation), unreliable diagnosis for individuals younger than 10 years old (which causes left truncation) and the selection criterion used for admixture analysis impact the number of identified subsets. A simulation study was performed. Different criteria - the likelihood ratio test (LRT), the Akaike information criterion (AIC), and the Bayesian information criterion (BIC) - were compared using no, left and/or right truncation simulated data...
October 21, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27766697/development-and-feasibility-of-the-computerized-turkish-edition-of-the-composite-international-diagnostic-interview-dia-x-cidi-version-2-8-tr
#13
Demet Dingoyan, Mike Mösko, Yadigar Imamoğlu, Alessa von Wolff, Jens Strehle, Hans-Ulrich Wittchen, Holger Schulz, Uwe Koch-Gromus, Andreas Heinz, Ulrike Kluge
The Composite International Diagnostic Interview (CIDI), which has been widely applied in epidemiological research, is a standardized, clinically structured interview that enables the diagnosis of mental disorders based on DSM and ICD criteria. The computerized DIA-X CIDI Version 2.8 investigated in this study is an adaptation of the German DIA-X/Munich CIDI, which was translated in a multi-step process into Turkish and used to survey the prevalence of mental disorders in individuals with Turkish migration backgrounds in Germany (N = 662)...
October 21, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27748002/psychometric-properties-of-the-dimensional-anxiety-scales-for-dsm-5-in-a-brazilian-community-sample
#14
Diogo A DeSousa, André L Moreno, Flávia L Osório, José Alexandre S Crippa, Richard LeBeau, Gisele G Manfro, Giovanni A Salum, Silvia H Koller
The DSM-5 highlights the use of dimensional assessments of mental health as a supplement to categorical diagnoses. This study investigated the psychometric properties of the DSM-5 Dimensional Anxiety Scales in a Brazilian community sample. Dimensional scales for generalized anxiety disorder, social anxiety disorder, panic disorder, agoraphobia, and specific phobia were administered to 930 adults aged 18 to 70, 64.2% female. Psychometric properties investigated were: unidimensionality; measurement invariance; internal consistency; composite reliability; test-retest reliability; convergent and divergent validity; category thresholds and item performance analyses...
October 16, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27747969/language-related-differential-item-functioning-between-english-and-german-promis-depression-items-is-negligible
#15
H Felix Fischer, Inka Wahl, Sandra Nolte, Gregor Liegl, Elmar Brähler, Bernd Löwe, Matthias Rose
To investigate differential item functioning (DIF) of PROMIS Depression items between US and German samples we compared data from the US PROMIS calibration sample (n = 780), a German general population survey (n = 2,500) and a German clinical sample (n = 621). DIF was assessed in an ordinal logistic regression framework, with 0.02 as criterion for R(2) -change and 0.096 for Raju's non-compensatory DIF. Item parameters were initially fixed to the PROMIS Depression metric; we used plausible values to account for uncertainty in depression estimates...
October 16, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27730743/development-of-stimulus-material-for-research-in-alcohol-use-disorders
#16
Werner Fey, Franz Moggi, Kristina B Rohde, Chantal Michel, Andrea Seitz, Maria Stein
The availability of appropriate stimulus material is a key concern for an experimental approach to research on alcohol use disorders (AUDs). A large number of such stimuli are necessary to evoke relevant alcohol-related associations. We report the development of a large stimulus database consisting of 457 pictures of alcoholic beverages and 398 pictures of neutral objects. These stimuli were rated by 18 inpatients hospitalized due to severe AUD and 18 healthy controls along four dimensions: arousal, valence, alcohol-relatedness, and craving...
October 12, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27723274/the-cannabis-abuse-screening-test-cast-revisited-examining-measurement-invariance-by-age
#17
Sharon R Sznitman
Defensible use of self-reported cannabis use problem scales in age comparative frameworks requires that measured constructs have equal psychometric properties across age groups. This study compares the psychometric properties of the Cannabis Abuse Screening Test (CAST) across three age groups (18-24, 25-29, 30-40). Data was collected online from an accessible sample of 1316 cannabis users. Factor analysis compared the optimal factor structure and dimensionality diffraction. Multi-group Model Invariance tests examined measurement invariance across the three age groups...
October 10, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27670287/incremental-validity-of-the-pid-5-in-relation-to-the-five-factor-model-and-traditional-polythetic-personality-criteria-of-the-dsm-5
#18
J Christopher Fowler, Michelle A Patriquin, Alok Madan, Jon G Allen, B Christopher Frueh, John M Oldham
BACKGROUND: This study assessed the incremental validity of the Personality Inventory for DSM-5 (PID-5) beyond the impact of demographic, burden of illness, five-factor model of personality, and DSM-5 personality disorder criteria with respect to associations with admission psychiatric symptoms and functional disability. METHODS: Psychiatric inpatients (N = 927) were administered the Big Five Inventory, PID-5, and personality disorder criteria counts. Prior treatment utilization, as well as baseline depression, anxiety, emotion regulation, and functional disability were administered within two days of the personality measures...
September 27, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27658956/development-of-short-form-and-screening-cutoff-point-of-the-smartphone-addiction-inventory-spai-sf
#19
Yu-Hsuan Lin, Yuan-Chien Pan, Sheng-Hsuan Lin, Sue-Huei Chen
Smartphone addiction is considered a form of technological addiction that has attracted increasing attention. The present study developed and validated the short-form Smartphone Addiction Inventory (SPAI-SF) and established cutoff point for screening smartphone addiction based on diagnostic criteria established by psychiatric interview. A total of 268 participants completed an online survey that collected demographic data, smartphone use behaviours, and responses to the 26-item SPAI. Each participant also completed a psychiatric interview...
September 23, 2016: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/27658846/the-replicability-of-cannabis-use-prevalence-estimates-in-the-united-states
#20
Omayma Alshaarawy, James C Anthony
Recent changes in cannabis policy in the United States have prompted increased interest in cannabis use estimates, and replicability of these estimates. Here, we compare prevalence estimates from two concurrent approaches: (1) standard social survey with audio computer-assisted self-interviews at respondent's home (ACASI-H), derived from the National Surveys on Drug Use and Health (NSDUH), and (2) standard health survey with ACASI assessment in a mobile health examination vehicle (ACASI-M), derived from National Health and Nutrition Examination Surveys (NHANES), 2005-2012, with essentially the same standardized items in cannabis modules...
September 23, 2016: International Journal of Methods in Psychiatric Research
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