Dataset Information

Psychometric properties of the Global Psychotrauma Screen in the United States.

ABSTRACT:

Background

Prior research assessing the psychometric properties of the Global Psychotrauma Screen provided support for its internal consistency reliability, construct validity, convergent validity, and divergent validity in several international samples, but not specifically in a U.S. subsample.

Objective

The purpose of this study was to assess psychometric properties of the GPS in the U.S.

Method

This observational study included a convenience sample of individually recruited participants (N = 231) who completed an initial study with 126-item online questionnaire and a two-week follow-up study with GPS alone through the weblinks provided by the research team. Data analyzes included measuring internal consistency and test-retest reliability, exploratory and confirmatory factor analyzes (EFA and CFA), convergent and divergent validity, sensitivity, specificity, and severity of the GPS symptom items. Additional CFA was conducted with data (N = 947) from the GPS multinational research project, U.S. subsample.

Results

The results showed acceptable internal consistency and test-retest reliability, convergent validity, and divergent validity of the GPS. The construct validity results supported a three-factor structure of the GPS symptoms. The GPS domains showed acceptable sensitivity and specificity with the cut-off scores of 3 for PTSD and 5 for CPTSD domains; and the scores of 1 for the anxiety, depression, and insomnia domains respectively. The GPS risk factors predicted the GPS symptom severity.

Conclusions

This study provides new and additional evidence on the psychometric properties of the GPS which may help health care providers with the selection of an appropriate screening instrument for trauma-related transdiagnostic symptoms. The study limitations should be addressed in future research through the replication of EFA and CFA internationally with larger samples, and the inclusion of a reference standard for dissociation.

SUBMITTER: Grace E

PROVIDER: S-EPMC10557551 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature

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Publications

Psychometric properties of the Global Psychotrauma Screen in the United States.

Grace Emma E Rogers Rosalind R Usher Robin R Rivera Iris Margarita IM Elbakry Hanan H Sotilleo Shanelle S Doe Renee R Toribio Mariella M Coreas Narda N Olff Miranda M

Health psychology and behavioral medicine 20231005 1

<h4>Background</h4>Prior research assessing the psychometric properties of the Global Psychotrauma Screen provided support for its internal consistency reliability, construct validity, convergent validity, and divergent validity in several international samples, but not specifically in a U.S. subsample.<h4>Objective</h4>The purpose of this study was to assess psychometric properties of the GPS in the U.S.<h4>Method</h4>This observational study included a convenience sample of individually recrui ...[more]

PMID: 37811317

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Project description:Background: Potentially traumatic stressors can lead to various transdiagnostic outcomes beyond PTSD alone but no brief screening tools exist for measuring posttraumatic responses in a transdiagnostic manner. Objective: Assess the psychometric characteristics of a new 22-item transdiagnostic screening measure, the Global Psychotrauma Screen (GPS). Method: An internet survey was administered with English speaking participants recruited passively via the website of the Global Collaboration on Traumatic Stress (GC-TS) (nGC-TS = 1,268) and actively via Amazon's MTurk (nMTurk = 1,378). Exploratory factor analysis, correlational analysis, sensitivity and specificity analysis, and comparisons in response between the two samples and between male and female respondents were conducted. Results: Exploratory factor analysis revealed a single factor underlying symptom endorsements in both samples, suggesting that such problems may form a unitary transdiagnostic, posttraumatic outcome. Convergent validity of the GPS symptom and risk factors was established with measures of PTSD and dissociative symptoms in the MTurk sample. Gender differences were seen primarily at the item level with women more often endorsing several symptoms and specific risk factors in the MTurk sample, and the GC-TS recruited sample endorsed more symptoms and risk factors than the MTurk sample, suggesting that the GPS may be sensitive to group differences. A GPS symptom cut-off score of 8 identified optimized sensitivity and specificity relative to probable PTSD based on PCL-5 scores. Conclusions: The current results provide preliminary support for the validity of the GPS as a screener for the concurrent measurement of several transdiagnostic outcomes of potentially traumatic stressors and the apparent unifactorial structure of such symptoms is suggestive of a single or unitary posttraumatic outcome. Future research is needed to evaluate whether similarly strong psychometric properties can be yielded in response to completion of the GPS in other languages.

Project description:Background: The review of trauma screening tools for children and adolescents indicates a need for developmentally and linguistically appropriate, globally applicable, free, and easily accessible trauma screening instruments. Objective: The aim of this study is to adapt the Global Psychotrauma Screen (GPS) for children and adolescents in the United States. Method: Using the modified Delphi method, this study included the GPS Expert Consensus (GPS-EC) and the GPS Stakeholder Consensus (GPS-SC) substudies. In the GPS-EC, ten reviewers who specialize in trauma services independently revised the GPS child and adolescent versions in four rounds. In the GPS-SC, a stratified minimum sample of children and adolescents (n = 24) and their parents (n = 24) were interviewed to collect feedback on the revised GPS versions. Results: In the GPS-EC Round 1, a low level of consensus was observed on the anxiety (restlessness) and depression (loss of interest) items. In Round 2, a high level of consensus was achieved on all but PTSD hypervigilance and detachment, and CPTSD self-concept items. Round 3 indicated a low level of consensus on the exposure and functioning items. Full consensus was achieved in Round 4 on all items. In the GPS-SC, children had more difficulties than adolescents with the exposure, dissociation, and risk-protection items. Conclusions: Based on the results of this study, the semantic adaptation process concluded with implementation of six decisions on the final GPS versions for children and adolescents: adding a non-binary gender choice for adolescents; removing the exposure section; using a full-sentence structure for children and a phrase structure for adolescents; retaining the two-part items on PTSD intrusion and avoidance, retaining self-blame but removing other-blame in the PTSD-blame item; providing specific descriptions of depersonalization and derealization in the dissociation items; and removing risk-protection and functioning items for children.

Project description:BackgroundPotentially traumatic events may lead to the development of a wide range of adverse psychological responses, including symptoms of anxiety, depression, and (complex) posttraumatic stress disorder (PTSD). Despite the high prevalence of potentially traumatic events in Iran, there is no population data nor evidence-based instrument to screen for cross-diagnostic psychological responses to trauma. The Global Psychotrauma Screen (GPS) is a transdiagnostic self-report instrument for the detection of trauma-related symptoms, as well as risk and protective factors related to the impact of potentially traumatic events.ObjectiveThe present study seeks to 1) translate and cross-culturally adapt the GPS in the Persian (Farsi) language and 2) examine the psychometric properties of the Persian GPS.MethodThe translation and adaptation were performed using the Sousa and Rojjanasrirat (2011) method. A pilot study (n = 30) was carried out to test the content validity and test-retest reliability of the GPS. Next, in a representative sample (n = 800) of residents of Kermanshah City, the GPS, the General Health Questionnaire (GHQ) and the PTSD Checklist for DSM-5 (PCL-5) were administered. Construct validity of the Persian GPS was assessed using exploratory and confirmatory factor analysis. Additionally, we evaluated the convergent validity and internal consistency of the GPS.ResultsExploratory and confirmatory factor analyses indicated a three-factor model as the best solution with factors representing 1) Negative Affect, 2) Core PTSD symptoms and 3) Dissociative symptoms. The GPS total symptom score had high internal consistency and high convergent validity with related measures. A GPS total symptom cut-off score of nine was optimal for indicating a probable PTSD diagnosis based on the PCL-5. About half (52%) of the current sample met criteria for probable PTSD.ConclusionsThe current findings suggest that the GPS can be effectively adapted for use in a non-Western society and, specifically, that the Persian GPS represents a useful, reliable and valid tool for screening of trauma-related symptoms in Iran.

Project description:ObjectiveTo determine sociodemographic correlates of problematic screen use (social media, video games, mobile phones) among a racially/ethnically and socioeconomically diverse population-based sample of 10-14-year-old early adolescents.Study designWe analyzed cross-sectional data from the Adolescent Brain Cognitive Development Study (Year 2, 2018-2020; N = 8753). Multiple linear regression analyses were used to estimate associations between sociodemographic factors (age, sex, race/ethnicity, primary language, household income, parental education) and adolescent-reported problematic video game (Video Game Addiction Questionnaire), social media (Social Media Addiction Questionnaire), and mobile phone use (Mobile Phone Involvement Questionnaire).ResultsBoys reported higher problematic video game use while girls reported higher problematic social media and mobile phone use. Native American, black, and Latinx adolescents reported higher scores across all problematic screen measures compared to non-Latinx white adolescents. Having unmarried/unpartnered parents was associated with higher problematic social media use. Although higher household income was generally protective against problematic video game use, these associations were weaker for black than white adolescents (p for interaction <0.05).ConclusionsGiven the sociodemographic differences in problematic screen use, digital literacy education strategies can focus on at-risk populations, encourage targeted counseling by pediatricians, and adapt family media use plans for diverse backgrounds.ImpactWhile sociodemographic differences in screen time are documented, we examined sociodemographic differences in problematic screen use in a large, diverse sample of early adolescents in the US. Boys reported higher problematic video game use while girls reported higher problematic social media and mobile phone use. Native American, black, and Latinx adolescents reported higher scores across all problematic screen measures compared to non-Latinx white adolescents. Although higher household income was generally protective against problematic video game use, these associations were weaker for black than white adolescents. Beyond time spent on screens, pediatricians, parents, and educators should be aware of sociodemographic differences in problematic screen use.

Project description:BackgroundEmerging evidence suggests a positive association between relevant aspects of one's psychological identity and physical activity engagement, but the current understanding of this relationship is primarily based on scales designed to assess identity as a person who exercises, leaving out essential aspects of physical activities (eg, incidental and occupational physical activity) and sedentary behavior.ObjectiveThe goal of this study is to evaluate the validity of a new physical activity and sedentary behavior (PA/SB) identity scale using 2 independent samples of US adults.MethodsIn study 1, participants answered 21 candidate items for the PA/SB identity scale and completed the International Physical Activity Questionnaire-Short Form (IPAQ-SF). Study 2 participants completed the same PA/SB identity items twice over a 1-week interval and completed the IPAQ-SF at the end. We performed factor analyses to evaluate the structure of the PA/SB identity scale, evaluated convergent validity and test-retest reliability (in study 2) of the final scale scores, and examined their discriminant validity using tests for differences in dependent correlations.ResultsThe final PA/SB identity measure was comprised of 3 scales: physical activity role identity (F1), physical activity belief (F2), and sedentary behavior role identity (F3). The scales had high test-retest reliability (Pearson correlation coefficient: F1, r=0.87; F2, r=0.75; F3, r=0.84; intraclass correlation coefficient [ICC]: F1: ICC=0.85; F2: ICC=0.75; F3: ICC=0.84). F1 and F2 were positively correlated with each other (study 1, r=0.76; study 2, r=0.69), while both were negatively correlated with F3 (Pearson correlation coefficient between F1 and F3: r=-0.58 for study 1 and r=-0.73 for study 2; F2 and F3: r=-0.46 for studies 1 and 2). Data from both studies also demonstrated adequate discriminant validity of the scale developed. Significantly larger correlations with time in vigorous and moderate activities and time walking and sitting assessed by IPAQ-SF with F1, compared with F2, were observed. Significantly larger correlations with time in vigorous and moderate activities with F1, compared with F3, were also observed. Similarly, a larger correlation with time in vigorous activities and a smaller correlation with time walking were observed with F2, compared with F3.ConclusionsThis study provided initial empirical evidence from 2 independent studies on the reliability and validity of the PA/SB identity scales for adults.

Dataset Information

Psychometric properties of the Global Psychotrauma Screen in the United States.

Background

Objective

Method

Results

Conclusions

Publications

Psychometric properties of the Global Psychotrauma Screen in the United States.

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