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Weight Loss and Changes in Generic and Weight-Specific Quality of Life in Obese Adolescents



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  • Personal Author:
  • Description:
    Purpose: To investigate how weight loss correlates with changes in generic and weight-specific quality of life (QoL). Methods: Youth generic (YQOL-S) and weight-specific instruments (YQOL-W) from 133 youth age 11-19 were analyzed at the beginning and end of 4-week immersion camp sessions known to produce weight loss. Paired samples t tests were used to test mean difference between baseline and final Body Mass Index (BMI) and YQOL-S and YQOL-W scores. YQOL-S and YQOL-W scores were transformed to values between 0 and 100, with higher values indicating better QOL. Cohen's d effect sizes were calculated to assess magnitude of effects. Percent weight loss (as % of baseline weight), change in BMI (baseline kg/m²-follow-up kg/m²), and change in % overweight ((BMI-50th% BMI for age and sex)/50th% BMI for age and sex × 100) were calculated. Multiple regressions were used to model final YQOL scores in the 11-14 and 15-19 age groups as functions of each measure of weight change, sex, age, and baseline YQOL score. Results: Youth experienced significant reductions in BMI (Mean change = 3.7, SD = 1.4, t = 34.1, P < 0.001) and in the other measures of weight change. YQOL-S and YQOL-W scores improved significantly (P < 0.001), and effect sizes were 0.61 and 0.66, respectively. Conclusion: Changes in generic and weight-specific quality of life scores are associated with weight loss. The weight-specific measure is slightly more sensitive to weight changes; however, when controlling for modifiers, the YQOL-W remained significantly associated with weight loss, while the generic QoL measure did not. [Description provided by NIOSH]
  • Subjects:
  • Keywords:
  • ISSN:
    0962-9343
  • Document Type:
    Text
  • Funding:
    Grant
  • Genre:
    Journal Article
  • Place as Subject:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Volume:
    20
  • Issue:
    6
  • NIOSHTIC Number:
    nn:20057081
  • Citation:
    Qual Life Res 2011 Aug; 20(6):961-968
  • Contact Point Address:
    D.L. Patrick, Department of Health Services, School of Public Health, University of Washington, Box 394555, Seattle, WA 98195-9455, USA
  • Email:
    donald@u.washington.edu
  • Federal Fiscal Year:
    2011
  • Performing Organization:
    University of Washington
  • Peer Reviewed:
    True
  • Start Date:
    20050701
  • Source Full Name:
    Quality of Life Research
  • End Date:
    20250630
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:9e8d6942b7f780f19ec19f69b89d3f14a5ad73ee7443cc3816ff87fb3df762a71107676e08bde9ca52d157518cadb67b235f90a3dc6c448c5382493596052810
  • Download URL:
  • File Type:
    Filetype[PDF - 184.46 KB ]
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