Psychometric properties of the Persian Food-Life Questionnaire Short Form among obese breast cancer survivors

Nejati, B., Lin, C.-Y., Griffiths, M.D. ORCID: 0000-0001-8880-6524 and Pakpour, A., 2020. Psychometric properties of the Persian Food-Life Questionnaire Short Form among obese breast cancer survivors. Asia-Pacific Journal of Oncology Nursing, 7 (1), pp. 64-71. ISSN 2347-5625

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Abstract

Objective: In order to assist weight control among women with breast cancer, improving their food attitudes may be an effective method. Therefore, the present study validated a short instrument assessing food attitudes (i.e., the Short Form of the Food-Life Questionnaire; FLQ-SF) among Iranian women with breast cancer who are overweight.

Methods: Women with breast cancer who are overweight (n=493; mean±SD age=52.3±10.7 years) participated in the study. All of them completed the FLQ-SF, questions designed using the Theory of Planned Behavior (TPB; including subjective norm, perceived behavioral control, and behavioral intention), and Food Frequency Questionnaire (FFQ). Both classical test theory and Rasch models were used to examine the psychometric properties of the FLQ-SF. More specifically, the factorial structure of the FLQ-SF was assessed using confirmatory factor analysis (CFA), the item fit was examined using the Rasch model, and the concurrent validity was evaluated using the correlation between the FLQ-SF, TPB elements, and FFQ.

Results: CFA results confirmed the Persian FLQ-SF as a five-factor structure. Rasch models indicated all the FLQ-SF items fit in the construct of food attitudes. Significant correlations between FLQ-SF and other instruments (TPB elements and FFQ) supported the concurrent validity of the FLQ-SF.

Conclusions: The psychometric findings of the present study demonstrated that the Persian FLQ-SF is a reliable and valid instrument. Therefore, the Persian FLQ-SF can be applied to assess food attitudes among Iranian women with breast cancer who are overweight.

Item Type: Journal article
Alternative Title: Using classical test theory and Rasch analysis to examine the Persian Food-Life Questionnaire (Short Form) among overweight and obese breast cancer survivors [post-print]
Publication Title: Asia-Pacific Journal of Oncology Nursing
Creators: Nejati, B., Lin, C.-Y., Griffiths, M.D. and Pakpour, A.
Publisher: Wolters Kluwer
Date: 2020
Volume: 7
Number: 1
ISSN: 2347-5625
Identifiers:
NumberType
10.4103/apjon.apjon_43_19DOI
Rights: This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.
Divisions: Schools > School of Social Sciences
Depositing User: Linda Sullivan
Date Added: 25 Sep 2019 09:44
Last Modified: 03 Jan 2020 15:47
URI: http://irep.ntu.ac.uk/id/eprint/37762

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