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Do errors in the GHQ-12 response options matter?

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  • 1Department of Psychological Medicine, King's College London, London, United Kingdom.

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|December 5, 2024
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Summary
This summary is machine-generated.

Minor errors in the General Health Questionnaire (GHQ-12) response options do not affect psychological wellbeing results. This study found no significant differences in outcomes when response sets were altered, indicating the measure

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Area of Science:

  • Psychological assessment
  • Psychometric validation
  • Mental health research

Background:

  • The General Health Questionnaire (GHQ-12) is a standard tool for assessing psychological wellbeing.
  • Transcription errors in GHQ-12 response options are possible due to varied response sets.
  • Errors early in the questionnaire may have a greater impact than later ones.

Purpose of the Study:

  • To investigate the effect of introducing illogical response options into the GHQ-12.
  • To specifically test the impact of errors in the first and eighth response sets.

Main Methods:

  • A double-blind randomized controlled trial was conducted.
  • Participants (N=1504) received one of three GHQ-12 versions: correct, error in item 1, or error in item 8.
  • Errors involved replacing standard response options with 'not at all.'

Main Results:

  • No statistically significant differences were found in the number of participants with possible poor psychological wellbeing across the three groups (χ2 = 0.32, p = 0.85).
  • Mean GHQ-12 scores did not differ significantly between the groups (F(2, 1501) = 0.26, p = 0.77).

Conclusions:

  • Minor deviations in GHQ-12 wording do not substantially alter study outcomes.
  • The GHQ-12 appears robust to small transcription errors in response options.