Further statistical and clinical validity for the Weight Efficacy Lifestyle Questionnaire-Short Form

Gretchen E. Ames, Michael G. Heckman, Nancy N. Diehl, Karen Grothe, Matthew M Clark

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Identifying barriers to long-term adherence to reduced energy intake and increased physical activity level is critically important for obese patients seeking weight loss treatment. Previous research has identified that one such barrier is low eating self-efficacy or poor confidence in one's ability to control eating behavior in the presence of challenging situations. Accordingly, a valid, brief measure of eating self-efficacy for longitudinal assessment of weight loss and regain is needed. The purpose of this study was to test the internal consistency and clinical validity of the Weight Efficacy Lifestyle Questionnaire-Short Form (WEL-SF). Participants were 1740 consecutive obese patients who presented for a psychological evaluation in consideration for bariatric surgery. Median BMI was 44.9 (range: 35.0-111.9), age 48.7. years (range: 18.9-77.3. years), and patients were predominantly female (71.1%) and Caucasian (90.8%). The median WEL-SF total score was 56 (range: 0-80) and Cronbach's alpha measuring internal consistency was 0.92 with a one-factor structure. In terms of clinical validation, lower WEL-SF total scores were significantly associated with higher rates of binge eating episodes (P. <. 0.0001), food addiction severity and dependence (P. <. 0.0001), night eating syndrome (P. <. 0.0001), depression (P. <. 0.0001), and anxiety (P. <. 0.0001). In contrast, higher WEL-SF total scores were associated with higher weight management self-efficacy (P. <. 0.0001) and motivation to make positive lifestyle changes (P. <. 0.0001). Taken together, these findings suggest that the WEL-SF is a psychometrically valid clinically meaningful measure of eating self-efficacy.

Original languageEnglish (US)
Pages (from-to)115-119
Number of pages5
JournalEating Behaviors
Volume18
DOIs
StatePublished - Aug 1 2015

Fingerprint

Life Style
Self Efficacy
Weights and Measures
Eating
Weight Loss
Bulimia
Aptitude
Bariatric Surgery
Feeding Behavior
Energy Intake
Surveys and Questionnaires
Motivation
Anxiety
Exercise
Depression
Psychology
Food
Research
Therapeutics

Keywords

  • Eating Self-Efficacy
  • Obesity
  • Weight Loss

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Clinical Psychology

Cite this

Further statistical and clinical validity for the Weight Efficacy Lifestyle Questionnaire-Short Form. / Ames, Gretchen E.; Heckman, Michael G.; Diehl, Nancy N.; Grothe, Karen; Clark, Matthew M.

In: Eating Behaviors, Vol. 18, 01.08.2015, p. 115-119.

Research output: Contribution to journalArticle

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