Evidence map›Paper›PMID 30866128›Full record

ArticleJournal of occupational health2019

Validity and reliability of work ability index (WAI) questionnaire among Iranian workers; a study in petrochemical and car manufacturing industries.

Mazloumi Adel, Rostamabadi Akbar, Garosi Ehsan

Open access · goldAbstract readValidation Study
In one paragraph

Article in Journal of occupational health, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
7.7field-weighted citation impact, top 3% 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

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 57 citations in OpenAlex.

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  14. Quality of life and work functionality in severe asthma patients: the impact of biological therapies.Journal of occupational medicine and toxicology (London, England) · 2024
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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Mazloumi AdelDepartment of Occupational Health Engineering, Tehran University of Medical Sciences, Tehran, Iran.
Rostamabadi AkbarDepartment of Occupational Health Engineering, Ashtian Health Care Center, Arak University of Medical Sciences, Arak, Iran.
Garosi EhsanDepartment of Occupational Health Engineering, Tehran University of Medical Sciences, Tehran, Iran.
Tehran University of Medical Sciences · IRArak University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesMaintenance and promotion of employees' work ability is one of the important social goals. This study is aimed at investigating psychometric properties of the Persian translation of work ability index (WAI).

methodsA total number of 750 employees were randomly selected from car manufacturing and petrochemical industries. Reliability of the questionnaire was determined using test-retest and Cronbach alpha coefficient. Factor analysis was used for assessing construct validity. To determine discriminant validity, the mean score of total WAI was compared between workers with high and low sick leave rate.

resultsIntraclass correlation coefficients for its seven dimensions were estimated higher than 0.7. The questionnaire showed a good internal consistency, Cronbach α = 0.78. Factor analysis showed a three-factor structure model for Persian translation of WAI including: mental resources, self-perceived work ability, and presence of disease and health-related limitation. A good level of discriminant validity was observed for all WAI dimensions except the item "work ability regarding work demands." DISCUSSION: The study findings indicate that the Persian version of WAI questionnaire has good psychometric properties of internal consistency and test-retest showed a good reliability of WAI questionnaire, which is in line with those found in previous studies. Therefore, this tool can be considered as a reliable instrument for assessing work ability.

Indexed as

AutomobilesManufacturing IndustryOil and Gas IndustryWork Capacity EvaluationAdultAgedCross-Sectional StudiesFactor Analysis, StatisticalHumansIranMaleMiddle AgedPsychometricsReproducibility of ResultsSurveys and QuestionnairesTranslationsIranian workerreliabilityvaliditywork ability index (WAI)

Identifiers

PMID30866128
PMCPMC6499439
OpenAlexW2913743841

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.