Evidence map›Paper›PMID 31664965›Full record

ArticleBMC psychiatry2019

Spanish validation of the self-evaluation of negative symptoms scale SNS in an adolescent population.

Juan F Rodríguez-Testal, Salvador Perona-Garcelán, Sonia Dollfus, María Valdés-Díaz, Jesús García-Martínez, Miguel Ruíz-Veguilla, Cristina Senín-Calderón

Open access · goldAbstract readValidation Study
In one paragraph

Article in BMC psychiatry, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
3.0field-weighted citation impact, top 9% of its field
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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. EPA guidance on assessment of negative symptoms in schizophrenia.European psychiatry : the journal of the Association of European Psychiatrists · 2021
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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

7 authors at 4 institutions in 2 countries.

Juan F Rodríguez-TestalPersonality, Evaluation and Psychological Treatment Department, University of Seville, Seville, Spain. Av. Camilo José Cela, 41018, Seville, SN, Spain.
Salvador Perona-GarcelánVirgen del Rocío Outpatient Mental Hospital, University Hospital Virgen del Rocío, Avenue Manuel Siurot, 41013, Seville, SN, Spain.
Sonia DollfusCHU de Caen, Service universitaire de Psychiatrie, Centre Esquirol, Avenue Côte de Nacre, F-14000, Caen, France.
María Valdés-DíazDepartment of Psychology, University of Cadiz, Avenue República Árabe Saharaui SN. 11510 Puerto Real, Cádiz, Spain.
Jesús García-MartínezDepartment of Psychology, University of Cadiz, Avenue República Árabe Saharaui SN. 11510 Puerto Real, Cádiz, Spain.
Miguel Ruíz-VeguillaVirgen del Rocío Outpatient Mental Hospital, University Hospital Virgen del Rocío, Avenue Manuel Siurot, 41013, Seville, SN, Spain.
Cristina Senín-CalderónDepartment of Psychology, University of Cadiz, Avenue República Árabe Saharaui SN. 11510 Puerto Real, Cádiz, Spain. cristina.senin@uca.es.ORCID 0000-0002-7604-8487
Universidad de Cádiz · ESHospital Universitario Virgen del Rocío · ESCentre Hospitalier Universitaire de Caen Normandie · FRUniversidad de Sevilla · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNegative symptoms (NS) may be observed in the general population in an attenuated form and in high-risk mental states. However, they have been less studied in the general population than positive symptoms, in spite of their importance at the insidious onset of schizophrenia and their appearance before positive symptoms. This study aimed to analyze the empirical structure of the Spanish version of the Self-Evaluation of Negative Symptoms (SNS) Scale and find its psychometric properties and invariance of measurement across sex and age in a sample of adolescents.

methodsThe sample consisted of 4521 adolescents (53.6% female) from 11 to 18 years of age.

resultsConfirmatory Factor Analysis of the SNS confirmed an internal structure of five first-order factors by the characteristic dimensions of NS: avolition, social withdrawal, diminished emotional range, anhedonia, alogia, and one second-order factor which includes the total NS score. Multi-group confirmatory factor analysis showed that the scale was invariant across sex and age. Total scale reliability was adequate. A strong relationship was found between the SNS with depressive symptomatology, moderate with ideas of reference and low with aberrant salience.

conclusionThe results back use of the Spanish version of the SNS scale for detection of NS in the general population of adolescents.

Indexed as

NegativismAdolescentChildDiagnostic Self EvaluationFactor Analysis, StatisticalFemaleHumansMalePersonality AssessmentPersonality DisordersPsychiatric Status Rating ScalesPsychometricsReproducibility of ResultsSpainSymptom AssessmentTranslationsAdolescenceGeneral populationNegative symptomsPsychosisSNS

Identifiers

PMID31664965
PMCPMC6819523
OpenAlexW2982355002

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.