Evidence map›Paper›PMID 38566138›Full record

ArticleBMC psychology2024

Psychometric properties of the GAD-7 (General Anxiety Disorder-7): a cross-sectional study of the Peruvian general population.

David Villarreal-Zegarra, Rubi Paredes-Angeles, Nikol Mayo-Puchoc, Enoc Arenas-Minaya, Jeff Huarcaya-Victoria, Anthony Copez-Lonzoy

Abstract read
In one paragraph

Article in BMC psychology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 1 synthesis or guideline pooled it.

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  7. Neural embedding of frailty in cognitively unimpaired aging and dementia across Latin America.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

David Villarreal-ZegarraUniversidad César Vallejo, Escuela de Medicina, Trujillo, Peru.ORCID https://orcid.org/0000-0002-2222-4764
Rubi Paredes-AngelesInstituto Peruano de Orientación Psicológica, Lima, Peru.ORCID https://orcid.org/0000-0003-3669-4932
Nikol Mayo-PuchocInstituto Peruano de Orientación Psicológica, Lima, Peru.ORCID https://orcid.org/0000-0002-6182-7605
Enoc Arenas-MinayaUniversidad Nacional Mayor de San Marcos, Lima, Peru.ORCID http://orcid.org/0000-0001-9577-6212
Jeff Huarcaya-VictoriaEscuela Profesional de Medicina Humana, Universidad Privada San Juan Bautista, Filial Ica, Ica, Peru.ORCID https://orcid.org/0000-0003-4525-9545
Anthony Copez-LonzoyUniversidad San Ignacio de Loyola, Lima, Peru. anthonycopez22@gmail.com.ORCID https://orcid.org/0000-0003-4761-4272

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAnxiety disorders are among the main mental health problems worldwide and are considered one of the most disabling conditions. Therefore, it is essential to have measurement tools that can be used to screen for anxiety symptoms in the general population and thus identify potential cases of people with anxiety symptoms and provide them with timely care. Our aim was to evaluate the psychometric properties of the General Anxiety Disorder-7 scale (GAD-7) in the Peruvian population.

methodOur study was a cross-sectional study. The sample included people aged 12 to 65 years in Peru. Confirmatory factor analysis, analysis of measurement invariance, convergent validity with the Patient Health Questionnaire-9 (PHQ-9) and internal consistency analysis were performed.

resultsIn total, 4431 participants were included. The one-factor model showed the best fit (CFI = 0.994; TLI = 0.991; RMSEA = 0.068; WRMR = 1.567). The GAD-7 score showed measurement invariance between men and women and between age groups (adults vs. adolescents) (ΔCFI < 0.01). The internal consistency of the one-factor model was satisfactory (ω = 0.90, α = 0.93). The relationship between depressive symptoms (PHQ-9) and anxiety symptoms (GAD-7) presented a moderate correlation (r = 0.77).

conclusionsOur study concluded that the GAD-7 score shows evidence of validity and reliability for the one-factor model. Furthermore, because the GAD-7 score is invariant, comparisons can be made between groups (i.e., by sex and age group). Finally, we recommend the use of the GAD-7 for the general population in the Peruvian context.

Indexed as

AnxietyAnxiety DisordersPatient Health QuestionnaireAdolescentAdultCross-Sectional StudiesFemaleGeneralized Anxiety DisorderHumansMalePeruPsychometricsReproducibility of ResultsSurveys and QuestionnairesAnxietyPeruPopulationPsychometrics

Identifiers

PMID38566138
PMCPMC10985987

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.