Validation of Tools to Assess Predictors of Successful Weight Loss Outcome in Individuals With Overweight and Obesity

To develop and validate questionnaires to assess the behavioral, psychosocial, and environmental predictors of successful weight loss outcomes. Mixed method study. Questionnaires were developed using 5 steps: item generation by literature review and preexisting questionnaires, expert evaluation, pil...

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Bibliographic Details
Published in:Journal of nutrition education and behavior 2022-09, Vol.54 (9), p.878-885
Main Authors: Chopra, Sakshi, Ranjan, Piyush, Malhotra, Anita, Sarkar, Siddharth, Kumari, Archana, Prakash, Bindu, Kaloiya, Gauri Shankar, Dwivedi, Sada Nand, Siddhu, Anupa, Vikram, Naval K.
Format: Article
Language:English
Subjects:
Adult
behavioral predictors
environmental predictors
Humans
Obesity - therapy
Overweight - therapy
Psychometrics
psychosocial predictors
reliability
Reproducibility of Results
Surveys and Questionnaires
validity
Weight Loss
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Summary:To develop and validate questionnaires to assess the behavioral, psychosocial, and environmental predictors of successful weight loss outcomes. Mixed method study. Questionnaires were developed using 5 steps: item generation by literature review and preexisting questionnaires, expert evaluation, pilot testing, factor analysis, and internal consistency. Adults with obesity recruited via web-based survey hyperlink. One hundred participants with a mean body mass index of 28.7 ± 4.4 kg/m2. The questionnaires were generated using 221 items. Establishing content, face and construct validity, and internal consistency. Content validity was analyzed using content validity index and content validity ratio, internal consistency through Cronbach α (CA), and structural validity by factor analysis via principal varimax rotation. All three questionnaires had good content validity. The Behavioral Predictor Questionnaire had good internal consistency (CA, 0.7) and excellent structural validity (69.7%). Psychosocial Predictors Questionnaire (CA, 0.8, 67.5%) and Environmental Predictors Questionnaire (CA: 0.8, 72.2%) had excellent internal consistency and structural validity. Questionnaires seem to be practical, valid, and reliable tools for baseline assessment of individual-specific factors related to weight loss success.
ISSN:1499-4046
1878-2620
DOI:10.1016/j.jneb.2021.12.002