Evidence map›Paper›PMID 16972158›Full record

ArticleQuality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation2006

Condensation and validation of a 4-item index of the Acne-QoL.

Jerry Tan, Karen Y Fung, Shahedul Khan

Abstract readValidation Study
PubMed Publisher
In one paragraph

Article in Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing 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

4 citing papers in PubMed.

  1. Evaluation of the French version of the 4-item index of the Acne-QoL (AcneQ4fr).Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2013
    Article
  2. The Cardiff Acne Disability Index (CADI): linguistic and cultural validation in Serbian.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2013
    Article
  3. Article
  4. 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.

Jerry TanDepartment of Medicine, University of Western Ontario, London, ON, Canada.
Karen Y Fung
Shahedul Khan

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe 19-item Acne-QoL is a validated psychometric instrument designed for use in clinical trials.

objectiveThe purpose of this study was to develop a condensed version of the Acne-QoL as an alternative measure of psychosocial impact for use in routine clinical practice.

methodsFour condensed versions of the Acne-QoL were evaluated by regression analysis in a subset of 434 patients. The version with four items most broadly representative of acne-specific quality of life combined with a high level of correlation to Acne-QoL total score was selected for further validation in two different patient samples.

resultsThe patient ranked condensation, representing items from each domain of greatest patient-perceived importance and relevance was selected for further analysis (Acne-Q(4)). The Acne-Q(4) explained 98.5% of the variation in total score of Acne-QoL. Validation of the Acne-Q(4) in a follow-up group and an independent subset of patients resulted in Pearson correlation coefficients of 0.967 (p<0.001). Construct validity of the Acne-Q(4) was confirmed by demonstrating a similar relationship as the Acne-QoL to acne severity. LIMITATIONS: There is less breadth and detail of QoL information in the Acne-Q(4) than in the Acne-QoL. The analysis relied on a total score for Acne-QoL, which the original developers did not validate.

conclusionsThe Acne-Q(4) is accurately reflective of the parent instrument and may facilitate the psychometric evaluation of the impact of facial acne on patients in routine clinical practice by its practicality.

Indexed as

Acne VulgarisQuality of LifeSurveys and QuestionnairesAdolescentAdultCanadaFemaleHealth StatusHumansMaleMiddle AgedPsychometrics

Identifiers

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.