Evidence map›Paper›PMID 31101049›Full record

ArticleHealth and quality of life outcomes2019

Confirming the factor structure of a generic quality of life instrument among pre-treatment substance use disorder patients.

Ashley Elizabeth Muller, Svetlana Skurtveit, Thomas Clausen

Abstract readValidation Study
In one paragraph

Article in Health and quality of life outcomes, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–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

1 citing paper in PubMed.

  1. Article
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

3 authors.

Ashley Elizabeth MullerNorwegian Centre for Addiction Research, Institute of Clinical Medicine, University of Oslo, Pb 1039 Blinder, 0136, Oslo, Norway. aemu@fhi.no.ORCID http://orcid.org/0000-0001-7819-6697
Svetlana SkurtveitNorwegian Centre for Addiction Research, Institute of Clinical Medicine, University of Oslo, Pb 1039 Blinder, 0136, Oslo, Norway.
Thomas ClausenNorwegian Centre for Addiction Research, Institute of Clinical Medicine, University of Oslo, Pb 1039 Blinder, 0136, Oslo, Norway.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundQuality of life (QoL) is a patient-reported outcome of increasing importance in the substance use disorder (SUD) treatment field, and impaired QoL may be an important impetus for treatment uptake. Instruments and methodologies abound, precluding comparison, as does a dearth of population norms. The QOL10 is a generic, overall QoL tool containing ten items and with simple scoring procedures. It is therefore a potential alternative to the gold standard WHOQOL-BREF. This study aimed to assess the two-factor structure of the QOL10 that has been suggested by a previous exploratory factor analysis.

methodsAdults entering 21 participating inpatient or outpatient SUD treatment were recruited to join a national longitudinal cohort study. 531 completed the QOL10 at treatment entry and were included in the analysis. Structural equation modelling (SEM) was used to confirm the model fit of a two-factor structure, and the scaling qualities of the QOL10 were reported.

resultsAccording to the SEM analysis, the QOL10 was comprised of one latent variable measuring social QoL, and one measuring global QoL, and all ten items were retained. Goodness of fit tests included: root mean square of approximation = 0.063, 90% CI 0.050-0.076; normed-fit index = 0.919; and comparative fit index = 0.943.

conclusionsThe QOL10 should be considered when clinicians in the SUD treatment field need a short, valid instrument that measures both global QoL and social QoL, with minimum respondent and administrator burden. The social domain is of particular utility and may be used as a stand-alone instrument. Test-retest reliability should be established in future studies.

Indexed as

Quality of LifeAdultFactor Analysis, StatisticalFemaleHumansLongitudinal StudiesMaleMiddle AgedPsychometricsReproducibility of ResultsSubstance-Related DisordersSurveys and QuestionnairesIsolationQOL10Social quality of lifeStructural equation modellingSubstance use disorderWHOQOL-BREF

Identifiers

PMID31101049
PMCPMC6525421

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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.