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Gepubliceerd in: Quality of Life Research 4/2014

01-05-2014

The impact of weight loss on health-related quality-of-life: implications for cost-effectiveness analyses

Auteurs: Amy E. Rothberg, Laura N. McEwen, Andrew T. Kraftson, Gina M. Neshewat, Christine E. Fowler, Charles F. Burant, William H. Herman

Gepubliceerd in: Quality of Life Research | Uitgave 4/2014

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Abstract

Purpose

To assess the impact of weight loss on health-related quality-of-life (HRQL), to describe the factors associated with improvements in HRQL after weight loss, and to assess the relationship between obesity as assessed by body mass index (BMI) and HRQL before and after weight loss.

Methods

We studied 188 obese patients with BMI ≥ 32 kg/m2 with one or more comorbidities or ≥35 kg/m2. All patients had baseline and follow-up assessments of BMI and HRQL using the EuroQol (EQ-5D) and its visual analog scale (VAS) before and after 6 months of medical weight loss that employed very low-calorie diets, physical activity, and intensive behavioral counseling.

Results

At baseline, age was 50 ± 8 years (mean ± SD), BMI was 40. 0 ± 5.0 kg/m2, EQ-5D-derived health utility score was 0.85 ± 0.13, and VAS-reported quality-of-life was 0.67 ± 0.18. At 6-month follow-up, BMI decreased by 7.0 ± 3.2 kg/m2, EQ-5D increased by 0.06 [interquartile range (IQR) 0.06–0.17], and VAS increased by 0.14 (IQR 0.04–0.23). In multivariate analyses, improvement in EQ-5D and VAS were associated with lower baseline BMI, greater reduction in BMI at follow-up, fewer baseline comorbidities, and lower baseline HRQL. For any given BMI category, EQ-5D and VAS tended to be higher at follow-up than at baseline.

Conclusion

Measured improvements in HRQL between baseline and follow-up were greater than predicted by the reduction in BMI at follow-up. If investigators use cross-sectional data to estimate changes in HRQL as a function of BMI, they will underestimate the improvement in HRQL associated with weight loss and underestimate the cost-utility of interventions for obesity treatment.

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Metagegevens
Titel
The impact of weight loss on health-related quality-of-life: implications for cost-effectiveness analyses
Auteurs
Amy E. Rothberg
Laura N. McEwen
Andrew T. Kraftson
Gina M. Neshewat
Christine E. Fowler
Charles F. Burant
William H. Herman
Publicatiedatum
01-05-2014
Uitgeverij
Springer International Publishing
Gepubliceerd in
Quality of Life Research / Uitgave 4/2014
Print ISSN: 0962-9343
Elektronisch ISSN: 1573-2649
DOI
https://doi.org/10.1007/s11136-013-0557-8