Psychometric Assessment of the Bangla Version of General Health Questionnaire-12 (GHQ-12)

Azharul Islam, Musfiqul Anwar Siraji, Salowa Salam Shaoli, Raisa Jerin, S. M. Fazle Elahi, Tanvir Ahmed, Nusrat Jahan, Sharmin Sultana, Md Firoj Alom, Md Parvez Sazzad Pintu, Reeva Mir, Prianka Shankar Das, Shamsul Haque

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The Bangla-translated 12-item General Health Questionnaire (GHQ-12) has been widely used in Bangladesh, but no attempt has been made to assess its psychometric properties. We investigated the latent structure, item quality, and differential item functioning of the Bangla GHQ-12 among 788 Bangladeshi adults (197 clinical outpatients and 591 nonclinical university students). A split-half exploratory factor analysis supported a unidimensional structure, confirmed by a bifactor model with the best fit (CFI = .96; TLI = .99; SRMR = .02; RMSEA = .06) in confirmatory factor analysis. The scale demonstrated excellent reliability (ordinal α = .96; McDonald’s ωt = .97) and known-group validity (clinical vs. nonclinical subgroups, t = 290.21, p < .001; Cohen’s d = 1.46). Item response theory-based analysis indicated reliability and coverage across the general mental health continuum (θ = ─3 to 3). While no item bias was found across genders, two items were more sensitive to clinical outpatients. We recommend the Bangla GHQ-12 as a unified tool for assessing general mental health and psychological distress among Bangladeshi nationals.

Original languageEnglish
Pages (from-to)303-315
Number of pages13
JournalPsychological Test Adaptation and Development
Volume5
Issue number1
DOIs
Publication statusPublished - Dec 2024

Keywords

  • Bangla GHQ-12
  • Bangladesh
  • differential item functioning
  • item response theory
  • mental health
  • structural validity

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