Development and content validity of an instrument for assessing the motivation for weight loss in adolescents with overweight and obesity

David Franciole Oliveira Silva, Angélica Luiza de Sales Souza, Jéssica Bastos Pimentel, Thatyane Oliveira Souza, Eduarda Pontes dos Santos Araújo, Karine Cavalcanti Maurício Sena-Evangelista, Ricardo Fernando Arrais and Severina Carla Vieira Cunha Lima

PLOS ONE, 2020, vol. 15, issue 11, 1-13

Abstract: Objective: To develop and validate the content of an instrument for assessing the motivation for weight loss in adolescents with overweight and obesity. Methods: The development and validation of the instrument were conducted in five stages, for which two systematic reviews were conducted. The first one, for the identification of questionnaires assessing the motivation for weight loss, included six studies and contributed to the selection of the domains for the instrument. The second one, conducted to identify the motivations for weight loss in adolescents with overweight and/or obesity, included six studies and contributed to the selection of 17 motivations included in the initial version of the instrument. The motivations most commonly identified were: having better health, improving my appearance, improving my self-esteem and avoiding bullying. The content validity was confirmed by a committee of 12 experts from the areas of nutrition, endocrinology, psychology, and physical education. Based on these evaluations, the content validity index was calculated. Only the items with a content validity index >0.80 for practical relevance were held in the instrument. Results: Five of the 17 motivations included in the initial version of the instrument were excluded because they had content validity index

Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0242680

DOI: 10.1371/journal.pone.0242680

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