Raters Interpret Positively and Negatively Worded Items Similarly in a Quality of Life Instrument for Children

Measurement invariance is an important assumption to meaningfully compare children’s quality of life (QoL) between different raters (eg, children and parents) and across genders. Moreover, QoL instruments may combine using negatively and positively worded items—a common method to reduce response bias. However, the wording effects may have different levels of impact on different raters and genders. Our aim was to investigate the measurement invariance of Kid-KINDL, a commonly used QoL instrument, across genders and raters and to consider the wording effects simultaneously. Third to sixth graders (208 boys and 235 girls) completed the self-rated Kid-KINDL, and 1 parent each of 241 children completed the parent-rated Kid-KINDL. The wording effects were accounted for by correlated traits-uncorrelated methods model. The measurement invariance was examined using multigroup confirmatory factor analysis. Item loadings and item intercepts were invariant across gender and rater when we simultaneously accounted for the wording effects of Kid-KINDL. Our results suggest that Kid-KINDL could be used to compare QoL across gender and that parent-rated Kid-KINDL could be used to measure children’s QoL. Specifically, the invariant factor loadings across child-rated and parent-rated Kid-KINDL suggest that the score weights in each item were the same for both children and parents (ie, the important items identified by the children are the same items identified by the parents). The invariant item intercepts suggest that both children and parents share the same threshold for each item. Based on the results, we tentatively recommend that each score of a parent-rated Kid-KINDL can stand for each child’s QoL.

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Measurement invariance of the Functional Assessment of Cancer Therapy—Colorectal quality-of-life instrument among modes of administration

Quality of Life Research ◽

10.1007/s11136-012-0272-x ◽

2012 ◽

Vol 22 (6) ◽

pp. 1415-1426 ◽

Cited By ~ 13

Author(s):

Carlos K. H. Wong ◽

Cindy L. K. Lam ◽

Brendan Mulhern ◽

Wai-Lun Law ◽

Jensen T. C. Poon ◽

...

Keyword(s):

Quality Of Life ◽

Cancer Therapy ◽

Measurement Invariance ◽

Functional Assessment ◽

Life Instrument

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Measurement invariance of the kidney disease and quality of life instrument (KDQOL-SF) across Veterans and non-Veterans

Health and Quality of Life Outcomes ◽

10.1186/1477-7525-8-120 ◽

2010 ◽

Vol 8 (1) ◽

pp. 120 ◽

Cited By ~ 16

Author(s):

Karen L Saban ◽

Fred B Bryant ◽

Domenic J Reda ◽

Kevin T Stroupe ◽

Denise M Hynes

Keyword(s):

Quality Of Life ◽

Kidney Disease ◽

Measurement Invariance ◽

Life Instrument

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The Maternal Postpartum Quality of Life Instrument (MPQOLI): Development and Psychometric Evaluation in an Exploratory Sequential Mixed-Method Study

10.21203/rs.3.rs-152709/v1 ◽

2021 ◽

Author(s):

Tahereh Mokhtarian-Gilani ◽

Nourossadat Kariman ◽

Hamid Sharif Nia ◽

Mahbobeh Ahmadi Doulabi ◽

Malihe Nasiri

Keyword(s):

Quality Of Life ◽

Factor Analysis ◽

Mixed Method ◽

Content Validity ◽

Discriminant Validity ◽

Life Instrument ◽

Convergent And Discriminant Validity ◽

Five Factors ◽

Confirmatory Factor

Abstract Background and Objective: There is no comprehensive instrument for the assessment of postpartum quality of life (QOL). This study was conducted to develop the Maternal Postpartum Quality of Life Instrument (MPQOLI) and assess its psychometric properties.Materials and Methods: This methodological study was conducted in 2019–2020 using an exploratory sequential mixed-method design. A qualitative study and a literature review were conducted to generate MPQOLI items. Through purposeful sampling, 590 postpartum women were recruited to respond the instrument. Face and content validity were assessed qualitatively and quantitatively and construct validity was assessed through exploratory and confirmatory factor analyses and convergent and discriminant validity assessments. Reliability was also assessed through different methods, including Cronbach’s alpha and McDonald’s Omega.Results: Eight items were deleted in content validity assessments and eighteen items were deleted in item analysis. Participants responded the 31-item MPQOLI. During exploratory factor analysis, fifteen items were deleted and the remaining sixteen items were loaded on five factors labeled perceived support, sexual relationship, bonding with newborn, breastfeeding and newborn care, and satisfaction with postpartum transition. These five factors explained 53.26% of the total variance. Confirmatory factor analysis confirmed the five-factor structure of MPQOLI with a CMIN/DF of 2.192, an RMSEA of 0.057, a χ2 of 206.087, a PCFI of 0.738, a PNFI of 0.705, a CFI of 0.942, and an IFI of 0.943. Average variance extracted was more than 0.5 and more than maximum shared squared variance, confirming convergent and discriminant validity, respectively. Reliability was also confirmed with Cronbach’s alpha values of 0.70–0.907 and an intraclass correlation coefficient of 0.919.Conclusion: The sixteen-item MPQOLI is a valid and reliable instrument for postpartum QOL assessment. It includes items on the different aspects of postpartum QOL and can be used for the early diagnosis of impaired postpartum QOL. Further studies are needed to assess the psychometric properties of MPQOLI in different cultures and communities.

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Factor structure, measurement invariance and psychometric properties of the Quality of Life Scale WHOQOL-BREF in the Ecuadorian context

Psicologia: Reflexão e Crítica ◽

10.1186/s41155-021-00194-9 ◽

2021 ◽

Vol 34 (1) ◽

Author(s):

Sandra Lima-Castro ◽

Paúl Arias-Medina ◽

Alexandra Bueno-Pacheco ◽

Eva Peña-Contreras ◽

Mónica Aguilar-Sizer ◽

...

Keyword(s):

Quality Of Life ◽

Factor Analysis ◽

Psychometric Properties ◽

Measurement Invariance ◽

Factor Structure ◽

Convergent Validity ◽

Graph Analysis ◽

Confirmatory Factor ◽

Correlated Factors

Abstract Background The short version of the World Health Organization Quality of Life questionnaire (WHOQOL-BREF) is a popular instrument used to assess quality of life. The objective of this study was to evaluate the following psychometric properties: structural validity, convergent validity, internal consistency, and measurement invariance across sex of the WHOQOL-BREF in a sample of Ecuadorian adults. Methods We used a sample of undergraduates (n = 987) to assess the WHOQOL-BREF original four-factor structure, a model with correlated factors, a hierarchical model, and two models resulting from the exploratory factor analysis and exploratory graph analysis. All the models were evaluated using confirmatory factor analysis. Results The results of the exploratory factor analysis and exploratory graph analysis suggest that the items are organized into four factors, although differently from the original version and the orthogonality assumption is not maintained. The confirmatory factor analysis shows that the original WHOQOL-BREF structure with correlated factors presents adequate psychometric properties. However, we propose a four-factor structure that has the best psychometric properties and adequate internal consistency. The results of the measurement invariance show that strict and strong invariance is achieved between men and women. Convergent validity analysis reveals moderate correlations with self-esteem, resilience, and social support. Conclusions Despite the original version of the WHOQOL-BREF with correlated factors has acceptable psychometric properties in the Ecuadorian context, we propose a version with a different organization of its items, which is consistent with the findings of other investigations.

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