Evidence map›Paper›PMID 25915929›Full record

ArticlePloS one2015

Diagnostic Validity of the Generalized Anxiety Disorder - 7 (GAD-7) among Pregnant Women.

Qiu-Yue Zhong, Bizu Gelaye, Alan M Zaslavsky, Jesse R Fann, Marta B Rondon, Sixto E Sánchez, Michelle A Williams

Registry-linked trialAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05608109 (Project Smash), which is not on this map. Cited by 152 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
152citing papers in PubMed, 3 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.

NCT05608109 nacompletednot on this mapstarted 2022, after this paper: background citation

Project Smash (Social Media Alcohol Session for Health)

TypeinterventionalSponsorDuquesne UniversityRan2022 to 2024Enrolled401ConditionsAlcohol ConsumptionArmsAlcohol personalized normative feedback (APNF), Social media personalized normative feedback (SMPNF)
3 · Its place in the literature

Who cites it

152 citing papers in PubMed, 3 syntheses or guidelines pooled it.

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92 more citing papers are in PubMed but not listed here.

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

7 authors.

Qiu-Yue ZhongDepartment of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA, United States of America.
Bizu GelayeDepartment of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA, United States of America.
Alan M ZaslavskyDepartment of Health Care Policy, Harvard Medical School, Boston, MA, United States of America.
Jesse R FannDepartment of Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA, United States of America.
Marta B RondonDepartment of Medicine, Cayetano Heredia Peruvian University, Lima, Peru.
Sixto E SánchezUniversidad Peruana de Ciencias Aplicadas, Lima, Peru; Asociación Civil PROESA, Lima, Peru.
Michelle A WilliamsDepartment of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA, United States of America.

Funding

A Cohort Study of Preterm Delivery in Relation to Partner Abuse, Mood and AnxietyR01HD059835 · NICHD · UNIVERSITY OF WASHINGTON · PI WILLIAMS, MICHELLE A. · 2010 to 2014
$2.8M
NICHD NIH HHS R01 HD059835NICHD NIH HHS R01-HD-059835
6 · The paper itself

Abstract

objectiveGeneralized anxiety disorder (GAD) during pregnancy is associated with several adverse maternal and perinatal outcomes. A reliable and valid screening tool for GAD should lead to earlier detection and treatment. Among pregnant Peruvian women, a brief screening tool, the GAD-7, has not been validated. This study aims to evaluate the reliability and validity of the GAD-7.

methodsOf 2,978 women who attended their first perinatal care visit and had the GAD-7 screening, 946 had a Composite International Diagnostic Interview (CIDI). The Cronbach's alpha was calculated to examine the reliability. We assessed the criterion validity by calculating operating characteristics. The construct validity was evaluated using factor analysis and association with health status on the CIDI. The cross-cultural validity was explored using the Rasch Rating Scale Model (RSM).

resultsThe reliability of the GAD-7 was good (Cronbach's alpha = 0.89). A cutoff score of 7 or higher, maximizing the Youden Index, yielded a sensitivity of 73.3% and a specificity of 67.3%. One-factor structure of the GAD-7 was confirmed by exploratory and confirmatory factor analysis. Concurrent validity was supported by the evidence that higher GAD-7 scores were associated with poor self-rated physical and mental health. The Rasch RSM further confirmed the cross-cultural validity of the GAD-7.

conclusionThe results suggest that the Spanish-language version of the GAD-7 may be used as a screening tool for pregnant Peruvian women. The GAD-7 has good reliability, factorial validity, and concurrent validity. The optimal cutoff score obtained by maximizing the Youden Index should be considered cautiously; women who screened positive may require further investigation to confirm GAD diagnosis.

Indexed as

AdolescentAdultAnxiety DisordersCross-Cultural ComparisonCross-Sectional StudiesFemaleHumansInterview, PsychologicalMiddle AgedPeruPregnancyPregnancy ComplicationsPsychiatric Status Rating ScalesReproducibility of ResultsYoung Adult

Identifiers

PMID25915929
PMCPMC4411061

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Registered trials

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.