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Obese Patients' Perceptions of Treatment Outcomes and the Factors That Influence Them
Gary D. Foster, PhD;
Thomas A. Wadden, PhD;
Suzanne Phelan, PhD;
David B. Sarwer, PhD;
Rebecca Swain Sanderson, BA
Arch Intern Med. 2001;161:2133-2139.
Background Despite considerable professional consensus that modest weight losses
of 5% to 10% are successful for reducing the comorbid conditions associated
with obesity, obese patients often desire weight losses 2 to 3 times greater
than this. Examining ways to reduce the disparities between treatment expectations
and subsequent outcomes, this study evaluated the role of physical characteristics,
treatment setting, and mood in patients' evaluations of treatment outcomes.
Methods This study was conducted in a university outpatient weight loss clinic
with a sample of 397 obese individuals seeking weight loss by a variety of
modalities. Before treatment, participants' heights and weights were measured,
and the Beck Depression Inventory and the Goals and Relative Weight Questionnaire
were administered.
Results Outcome evaluations ranged from 64.4 ± 11.1 kg (mean ±
SD) for dream weight to 90.1 ± 19.1 kg for disappointed weight. Initial
body weight was the strongest predictor of disappointed, acceptable, and happy
weights ( = .90, .76, and .57, respectively). Sex ( = -.37)
and height ( = .37) were the strongest determinants of dream weight.
Heavier participants chose higher absolute weights, but the weight loss required
to reach each of the outcomes was greater for heavier than for lighter patients.
Conclusions These data signal a therapeutic dilemma in which the amount of weight
loss produced by the best behavioral and/or pharmacologic treatments is viewed
as even less than disappointing. Patients with the highest pretreatment weights
are likely to have the most unrealistic expectations for success.
From the Department of Psychiatry, University of Pennsylvania School
of Medicine, Philadelphia.
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