How to measure a latent construct: Psychometric principles for the development and validation of measurement instruments

El-Den, Sarira; Schneider, Carl R.; Mirzaei, Ardalan; Carter, Stephen

doi:10.1111/ijpp.12600

Cited by 56 publications

(40 citation statements)

References 53 publications

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“…Previous KAP studies that were published used non-validated questionnaires [ 20 , 21 ]. Instruments should be validated to ensure consistency and reliability of the results obtained [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Validation of the psychometric properties of the Malay advance care planning questionnaire

et al. 2021

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Background There is a growing interest among the developing countries on advance care planning (ACP) due to the reported benefits of planning ahead in the developed countries. Validated instruments in various languages have been developed to facilitate study on the views of public prior to its implementation. However, instrument to explore the views on ACP in Malay has not been developed and validated yet, even though Malay is spoken extensively by approximately 220 million people in the Malay Archipelago. There is also a need for instrument in Malay language to facilitate the assessment of knowledge, attitude and practice (KAP) of Malaysians regarding ACP. Therefore, the aim of this study was to validate the psychometric properties of the Malay Advance Care Planning Questionnaire (ACPQ-M). Methods The ACPQ was translated according to international guidelines. This validation study was conducted from January to June 2018. Participants who were ≥ 21 years old, and able to understand Malay were recruited from an urban primary care clinic and a tertiary education institution in Malaysia. A researcher administered the ACPQ-M to participants via a face-to-face interview at baseline and 2 weeks later. Each interview took approximately 10–20 min. Results A total of 222/232 participants agreed to participate (response rate = 96.0%). Exploratory factor analysis and confirmatory factor analysis found that the ACPQ-M was a 4-factor model. The Cronbach’s α values for the four domains ranged from 0.674–0.947. Only 157/222 participants completed the test-retest (response rate = 71%). At test-retest, quadratic weighted kappa values for all domains ranged from 0.340–0.674, except for two domains which ranged from − 0.200-0.467. Conclusions The ACPQ-M was found to be a 4-factor model, and a valid and reliable instrument to assess the KAP regarding ACP. This instrument can contribute to profound understanding of the KAP of Malaysians regarding ACP, and assist policy makers in determining the readiness for legislation of ACP in Malaysia.

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Section: Introductionmentioning

confidence: 99%

Validation of the psychometric properties of the Malay advance care planning questionnaire

et al. 2021

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“…provides a clear outline on the importance of content validity in the validation of an instrument's appropriateness and utility. For tools focused on objective knowledge parameters, expert grading utilising a Delphi process may be a more appropriate analysis than Exploratory factor analysis or Principal component analysis when attempting to balance and reduce item themes 18,21 . Overall, after modifications and removals from the I‐CVI analysis, the questionnaire contained a uniform spread of themes including at least one item focussed on each of the seven mapped guideline areas.…”

Section: Discussionmentioning

confidence: 99%

“…The development and validation process of the Fever Management Questionnaire contained several steps based on current best practice recommendations 16,18 (Fig. 1).…”

Section: Methodsmentioning

confidence: 99%

Development and validation of a Fever Management Questionnaire aimed at parents and care givers

Arias

Chen

Moles

2020

J Paediatrics Child Health

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Aim The symptoms of childhood fever are often inappropriately managed by care givers resulting in overuse of health resources and medication errors. Understanding care giver's knowledge, attitudes and beliefs about fever management using a validated questionnaire is warranted. The aim of this study was to develop and validate a comprehensive Fever Management Questionnaire. Methods The questionnaire items were developed through a content analysis of the literature and current fever management guidelines. For the knowledge component, a multidisciplinary panel of 12 experts assessed content validity of items (n = 35) through a one‐round Delphi process. The construct validity of the attitudes and belief items (19 items) were assessed using principal components analysis utilising response data collected from 149 Australian parents and care givers. Results Based on the responses from the panel of experts, six items were removed, six items required substantive modification, 13 items required minor modification with the remaining eight items retained in original form. For the Attitudes and Beliefs items, a parsimonious solution with three principal components resulted after removal of six cross‐loading items. The factor loadings of each item displayed a strong correlation to one of three components with scores ranging from 0.791 down to 0.541. The resulting Cronbach's α for the tool was 0.729. Conclusion Psychometric testing of this two‐part Fever Management Questionnaire has resulted in a tool with acceptable validity and reliability. This tool should now be used to gather the knowledge and attitudes of care givers surrounding fever management to further understand factors that lead to inappropriate fever management.

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“…It will be considered acceptable if χ 2 /df <2, comparative fit index <0.95, root mean square error of approximation <0.06 and Tucker-Lewis Index <0.95. 55…”

Section: Open Accessmentioning

confidence: 99%

Healthcare professionals’ knowledge, attitudes and practices toward deprescribing: a protocol of cross-sectional study (Desmedica Study—Brazil)

2021

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BackgroundDeprescribing is the planned and supervised process of dose reduction or stopping of medication that might be causing harm, or no longer be of benefit. It is an activity that should be a normal part of care/the prescribing cycle. Although now broadly recognised, there are still challenges in its effective implementation.ObjectivesTo develop and validate an instrument to measure Brazilian healthcare professionals’ knowledge, attitudes and practices towards deprescribing.MethodsThis study will include the following steps: (1) development of the preliminary instrument; (2) content validation; (3) pilot study; (4) evaluation of psychometric characteristics. After the elaboration of items of the instrument through the literature review, we will use a hybrid Delphi method to develop and establish the content validity of the instrument. Further, a pilot survey will be performed with 30 healthcare professionals. Finally, for the evaluation of psychometric characteristics, a cross-sectional study will be accomplished with a representative sample of different healthcare professionals from different Brazilian states using respondent-driven sampling. Exploratory factor analysis and confirmatory factor analysis will be performed. For assessing the model fit, we will use the ratio of χ2 and df (χ2/df), comparative fit index, the goodness of fit index and root mean square error of approximation. In addition, the reliability of the instrument will be estimated by test–retest reproducibility and Cronbach’s alpha coefficient (α).Ethics and disseminationThe Ethics Committee for Research at the University of Sorocaba (ethics approval number: 3.848.916) approved the study. Study findings will be circulated to healthcare professionals and scientists in the field through publication in peer-reviewed journals and conference presentations.

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How to measure a latent construct: Psychometric principles for the development and validation of measurement instruments

Cited by 56 publications

References 53 publications

Validation of the psychometric properties of the Malay advance care planning questionnaire

Validation of the psychometric properties of the Malay advance care planning questionnaire

Development and validation of a Fever Management Questionnaire aimed at parents and care givers

Healthcare professionals’ knowledge, attitudes and practices toward deprescribing: a protocol of cross-sectional study (Desmedica Study—Brazil)

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