Health related quality of life after gastric bypass or intensive lifestyle intervention: a controlled clinical study

Health and Quality of Life Outcomes

Jøran Hjelmesæth¹  Rune Sandbu¹  Gerd Karin Natvig⁴  Serena Tonstad²  Jo Røislien³  Randi Størdal Lund¹  Tor Ivar Karlsen⁵ 

[1] Morbid Obesity Centre, Vestfold Hospital Trust, Tønsberg, Norway;School of Public Health, Loma Linda University, Loma Linda, CA, USA;Department of Biostatistics, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway;Department of Public Health and Primary Health Care, University of Bergen, Bergen, Norway;Department of Health and Nursing Sciences, University of Agder, Grimstad, Norway

关键词: Lifestyle modification;    Bariatric surgery;    Quality of life;   

Others  :  824058
DOI  :  10.1186/1477-7525-11-17

 received in 2012-08-20, accepted in 2013-02-04,  发布年份 2013

【 摘 要 】

Background

There is little robust evidence relating to changes in health related quality of life (HRQL) in morbidly obese patients following a multidisciplinary non-surgical weight loss program or laparoscopic Roux-en-Y Gastric Bypass (RYGB). The aim of the present study was to describe and compare changes in five dimensions of HRQL in morbidly obese subjects. In addition, we wanted to assess the clinical relevance of the changes in HRQL between and within these two groups after one year. We hypothesized that RYGB would be associated with larger improvements in HRQL than a part residential intensive lifestyle-intervention program (ILI) with morbidly obese subjects.

Methods

A total of 139 morbidly obese patients chose treatment with RYGB (n=76) or ILI (n=63). The ILI comprised four stays (seven weeks) at a specialized rehabilitation center over one year. The daily schedule was divided between physical activity, psychosocially-oriented interventions, and motivational approaches. No special diet or weight-loss drugs were prescribed. The participants completed three HRQL-questionnaires before treatment and 1 year thereafter. Both linear regression and ANCOVA were used to analyze differences between weight loss and treatment for five dimensions of HRQL (physical, mental, emotional, symptoms and symptom distress) controlling for baseline HRQL, age, age of onset of obesity, BMI, and physical activity. Clinical relevance was assessed by effect size (ES) where ES<.49 was considered small, between .50-.79 as moderate, and ES>.80 as large.

Results

The adjusted between group mean difference (95% CI) was 8.6 (4.6,12.6) points (ES=.83) for the physical dimension, 5.4 (1.5–9.3) points (ES=.50) for the mental dimension, 25.2 (15.0–35.4) points (ES=1.06) for the emotional dimension, 8.7 (1.8–15.4) points (ES=.37) for the measured symptom distress, and 2.5 for (.6,4.5) fewer symptoms (ES=.56), all in favor of RYGB. Within-group changes in HRQOL in the RYGB group were large for all dimensions of HRQL. Within the ILI group, changes in the emotional dimension, symptom reduction and symptom distress were moderate. Linear regression analyses of weight loss on HRQL change showed a standardized beta-coefficient of –.430 (p<.001) on the physical dimension, –.288 (p=.004) on the mental dimension, –.432 (p<.001) on the emotional dimension, .287 (p=.008) on number of symptoms, and .274 (p=.009) on reduction of symptom pressure.

Conclusions

Morbidly obese participants undergoing RYGB and ILI had improved HRQL after 1 year. The weaker response of ILI on HRQL, compared to RYGB, may be explained by the difference in weight loss following the two treatments.

Trial registration

Clinical Trials.gov number NCT00273104

【 授权许可】

   
2013 Karlsen et al; licensee BioMed Central Ltd.

【 图 表 】

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