AI Article Synopsis
- The study evaluated the Anxiety Symptom Scale (ASS) using data from over 16,000 participants aged 18-90, aiming to assess its psychometric properties through Rasch analysis.
- Results showed that after modifying the scoring system, the ASS fit the Rasch model well, with no significant differences by sex, age, or education level, although some items indicated local dependency.
- The scale may struggle with reliability for the general population but appears more effective for clinical settings, suggesting that focused applications could enhance its validity in measuring anxiety.
Article Abstract
Background: We aimed to assess the psychometric properties of the ten-item Anxiety Symptom Scale (ASS) using Rasch analysis. Data from the Lolland-Falster Health Study (LOFUS) were used including ASS data for 16,137 persons aged 18-90 years.
Methods: Fit to the Rasch model, ordering of response categories, dimensionality testing, test for differential item functioning, test for local dependency of items, and calculation of reliability were used to evaluate the psychometric characteristics of the ASS.
Results: Ordered response categories were achieved for nine of ten items after modifying the original six-point scoring system into a five-point system. After adjustment of the sample size to 500 persons, the ASS fitted the Rasch Model (p = 0.051). Dimensionality testing supported combining the ten items into a total score. No significant differential item functioning was observed for sex, age group, and educational level. Items 1 and 9 and items 4 and 5 demonstrated indication of local dependency. Combining these two item pairs improved the fit of the ASS to the Rasch model.
Limitations: The total ASS was poorly targeted for the LOFUS population as the majority of persons were located at the lower end of the construct. This poor alignment could explain the low reliability (PSI 0.49). Analyzing a balanced random sample of responders with high and low ASS scores demonstrated a sufficient PSI (0.81).
Conclusions: Despite problems with the measurement structure, the ASS seems to be a promising instrument for measuring anxiety. However, it may prove more reliable for use in clinical samples of respondents.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jad.2022.02.006 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Is the convergence insufficiency symptom survey applicable to elderly individuals?
BMC Ophthalmol
January 2025
Department of Optometry, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Background: The psychometric properties of the Convergence Insufficiency Symptom Survey (CISS) have been previously determined across the younger adult population. This study investigated the psychometric properties of the CISS in presbyopic adults via classical and Rasch analysis.
Methods: A total of 100 presbyopic individuals (40-60 years) were selected with far and near acuity of 20/20 with their habitual spectacles; 50 had convergence insufficiency and 50 had normal binocular vision.
Using Rasch analysis to assess the latent construct of the Capacity to Work Index in a Swedish working population sample.
Eur J Public Health
January 2025
School of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Academy at the of University of Gothenburg, Gothenburg, Sweden.
Measurements of capacity to work (CTW) in relation to common mental disorders (CMD) are needed to improve research on determinants for maintained work participation (WP). The aim of this study was to assess the construct validity of the Capacity to Work Index (C2WI) in a heterogenous sample of the Swedish working population. Cross-sectional web survey data among Swedish employees (n = 8201) was used.
View Article and Find Full Text PDFValidating psychometric properties of generic quality-of-life instruments (WHOQOL-BREF (TW) and EQ-5D) among non-dialysis chronic kidney disease: Rasch and confirmatory factor analyses.
J Formos Med Assoc
January 2025
Division of Nephrology, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng-Kung University, Tainan, Taiwan; Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan. Electronic address:
Background: Quality of life (QOL) is important for evaluating medical care outcomes. In chronic kidney disease (CKD) population, generic instruments, such as WHOQOL-BREF and EQ-5D, are commonly used for comparing various medical conditions for policy-making purposes. However, their psychometric properties have not yet been validated in non-dialysis CKD population.
View Article and Find Full Text PDFPsychometric properties of the Swedish version of the Patient Health Questionnaire-9: an investigation using Rasch analysis and confirmatory factor analysis.
BMC Psychiatry
January 2025
Department of Clinical Neuroscience, Centre for Psychiatry Research, Karolinska Institutet, & Stockholm Health Care Services, Region Stockholm, Stockholm, Sweden.
Depression is one of the most common psychiatric conditions. Given its high prevalence and disease burden, accurate diagnostic procedures and valid instruments are warranted to identify those in need of treatment. The Patient Health Questionnaire-9 (PHQ-9) is one of the most widely used self-report measures of depression, and its validity and reliability has been evaluated in several languages.
View Article and Find Full Text PDFAssessment of pandemic-related pregnancy stress from seven western countries using Rasch analyses.
J Psychiatr Res
December 2024
Instituto de Investigación Biosanitaria Ibs.GRANADA, Granada, Spain; Faculty of Health Sciences, Department of Nursing, University of Granada (Spain), 04120 Almería, Spain. Electronic address:
Introduction: This study examined psychometric properties of the Pandemic-Related Pregnancy Stress Scale (PREPS) using a Rasch Model (RM) in a large sample of pregnant women from Germany, Israel, Italy, Poland, Spain, Switzerland and the United States of America (USA).
Material And Methods: Rasch analyses were used to analyze a sample of 7185 pregnant women who completed the PREPS during the COVID-19 pandemic onset from April to August 2020. Psychological, sociodemographic, and obstetric factors were also collected and analyzed.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!