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Psychometric properties the Iranian version of Older People’s Quality Of Life questionnaire (OPQOL)

Overview of attention for article published in Health and Quality of Life Outcomes, September 2018
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Title
Psychometric properties the Iranian version of Older People’s Quality Of Life questionnaire (OPQOL)
Published in
Health and Quality of Life Outcomes, September 2018
DOI 10.1186/s12955-018-1002-z
Pubmed ID
Authors

Maryam Nikkhah, Majideh Heravi-Karimooi, Ali Montazeri, Nahid Rejeh, Hamid Sharif Nia

Abstract

Assessing quality of life (QOL) in elderly needs specific instruments. The Older People's Quality of Life Questionnaire (OPQOL-35) is one of the common tools that used for measuring quality of life in elderly populations. The questionnaires contains 35 items tapping into eight domains including life overall, health, social relationships and participation, independence, control over life and freedom, home and neighborhood, psychological and emotional well-being, financial circumstances, culture and religion. This study aimed to translate and validate the OPQOL-35 in Iran. Forward-backward procedure was applied to translate the original questionnaire from English into Persian. Then following qualitative face and content validity, a sample of elderly people completed the questionnaire. In order to evaluate the construct validity, exploratory and confirmatory factor analyses was performed. Subsequently, convergent and divergent validity of the factors were evaluated. Reliability was evaluated by performing internal consistency analysis and Intraclass Correlation Coefficients (ICC). In all 500 older people completed the questionnaire. The mean age of participant was 68.92 (SD = 6.97) years, and mostly were males (66.6%). The result of exploratory factor analysis showed 8 factors with Eigen values of greater than one, which explained 67.4% of the variance observed. Confirmatory factor analysis showed acceptable fit indexes for the data [Comparative Fit Index (CFI) = 0.92, Minimum Discrepancy Function by Degrees of Freedom divided (CMIN/DF) = 2.832, Root Mean Square Error of Approximation (RMSEA) = 0.067]. The convergent and divergent validity did not support three latent factors (Life overall, Independence, control over life, freedom and Psychological and emotional well-being). Convergent and divergent validity shown that construct fulfilled for the health, social relationships and participation, home and neighborhood, financial circumstances, culture and religion latent factors, however the results did not support the convergent and divergent validity for three latent factors (Life overall, Independence, control over life, freedom and Psychological and emotional well-being). Cronbach's alpha coefficient for the subscales ranged from 0.65-0.95. Test-retest reliability (ICC) of the questionnaire with two weeks interval were ranged from 0.88-0.95 indicating a good range of reliability. The findings suggest that the Iranian version of OPQOL-35 is a valid measure for assessing quality of life in elderly populations in different settings.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 106 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 106 100%

Demographic breakdown

Readers by professional status Count As %
Student > Master 10 9%
Lecturer 9 8%
Student > Ph. D. Student 9 8%
Student > Bachelor 8 8%
Other 7 7%
Other 17 16%
Unknown 46 43%
Readers by discipline Count As %
Nursing and Health Professions 18 17%
Medicine and Dentistry 8 8%
Psychology 7 7%
Social Sciences 4 4%
Engineering 3 3%
Other 15 14%
Unknown 51 48%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 06 September 2018.
All research outputs
#17,989,170
of 23,102,082 outputs
Outputs from Health and Quality of Life Outcomes
#1,520
of 2,190 outputs
Outputs of similar age
#240,935
of 335,873 outputs
Outputs of similar age from Health and Quality of Life Outcomes
#57
of 61 outputs
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