Reliability of the General Anxiety Disorder -7 Questionnaire for Non-Healthcare Workers


Sri Idaiani1), Maria Holly Herawati1), Rofingatul Mubasyiroh2),

Lely Indrawati2), Indri Yunita2), Nikson Sitorus2), Siti Isfandari3)

1)Center for Research and Development of Health Resources and Services, Jakarta

2)Center for Research and Development of Public Health Efforts, Jakarta

3)Center for Research and Development of Humaniora and Health Management, Jakarta

Abstract

 

Background: To conduct a population study, there is a need to first assess the validity and reliability of the measuring instrument such as a questionnaire. This study aimed to examine the reliability of the GAD-7 questionnaire in the non-healthcare workers’ population.

Subjects and Method: This was a cross-sectional study conducted in April 2020. A sample of 1,020 subjects was selected for this study. The data were collected using the General Anxiety Disorder questionnaire 7 (GAD-7). The inter-item correlation and Cronbach alpha were calculated to assess the instrument reliability using STATA 15.

Results: The inter-item correlation as well as the item-rest correlation of the 7 items GAD-7 questionnaire ranged from 0.57 to 0.83 with p< 0.050. The Cronbach alpha = 0.88.

Conclusion: The reliability of GAD-7 questionnaire is high so it can be used to measure anxiety in the non-healthcare workers’ population.

Keywords: reliability, GAD-7, non-healthcare workers

Correspondence:

Sri Idaiani. Center for Research and Development of Health Resources and Services. Jl Percetakan Negara No. 29, Central Jakarta. Email: srii­daiani@gmail.com. Mobile: +62 8121177658.

DOI: https://doi.org/10.26911/ICPHepidemiology.FP.08.2021.07

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