Evidence map›Paper›PMID 17963038›Full record

Trial reportJournal of behavioral medicine2008

Changes in self-efficacy and dietary adherence: the impact on weight loss in the PREFER study.

Melanie T Warziski, Susan M Sereika, Mindi A Styn, Edvin Music, Lora E Burke

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Journal of behavioral medicine, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

81 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  6. Theoretical and Behavioral Mediators of a Weight Loss Intervention for Men.Annals of behavioral medicine : a publication of the Society of Behavioral Medicine · 2016
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  7. Longitudinal Weight Loss Patterns and their Behavioral and Demographic Associations.Annals of behavioral medicine : a publication of the Society of Behavioral Medicine · 2016
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  14. Weight loss and self-regulatory eating efficacy in older adults: the cooperative lifestyle intervention program.The journals of gerontology. Series B, Psychological sciences and social sciences · 2011
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21 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Melanie T WarziskiHealth & Community Systems Department, University of Pittsburgh School of Nursing, 415 Victoria Building, Pittsburgh, PA 15261, USA. mtw8@pitt.edu
Susan M Sereika
Mindi A Styn
Edvin Music
Lora E Burke

Funding

University of Pittsburgh Clinical and Translational Science InstituteUL1TR000005 · NCATS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI REIS, STEVEN E · 2012 to 2015
$50.8M
WITHIN SUBJ VARIABILITY IN MEASUREMENTS DRUG METABOL ENZYMES IN HLTY SUBJM01RR000056 · NCRR · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI LEVINE, ARTHUR S · 1985 to 2006
$29.2M
Core--Statistics and Data ManagementP30NR003924 · NINR · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI ERLEN, JUDITH A · 1994 to 2008
$3.1M
Treatment Preference/Vegetarian Diet in Weight Loss(RMI)R01DK058631 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI BURKE, LORA E · 2001 to 2005
$1.7M
Weight Loss Maintenance: Exploring Racial DifferencesF31NR009750 · NINR · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI WARZISKI TURK, MELANIE T · 2005 to 2008
$112k
NCATS NIH HHS UL1 TR000005NCRR NIH HHS 5MO1-RR00056NIDDK NIH HHS 5R01 DK 58631NIDDK NIH HHS DK-046204NINR NIH HHS F31 NR 009750NINR NIH HHS P30-NR03924
6 · The paper itself

Abstract

Findings from studies examining self-efficacy and its relationship to weight loss have been inconsistent. We examined self-efficacy specific to changing eating behaviors in the PREFER trial, an 18-month behavioral weight-loss study, to determine if self-efficacy and dietary adherence were associated with weight change, and what impact self-efficacy had on weight change after controlling for adherence. Measurements included the weight efficacy lifestyle (WEL) questionnaire, body weight, self-reported fat gram intake, kilocalorie intake, and adherence to kilocalorie and fat gram goals at baseline, 6, 12, and 18 months. The sample (N = 170) was 88.2% female and 70.0% Caucasian; the mean age was 44.1 years (SD = 8.8). Mean weight loss at 18 months was 4.64% (SD = 6.24) of baseline body weight and the mean increase in self-efficacy was 11.70% (SD = 38.61). Self-efficacy improved significantly over time (p = 0.04) and was associated with weight loss (p = 0.02). Adherence to the fat gram goal was associated with weight loss (p = 0.0003), and self-efficacy remained associated with weight loss after controlling for fat gram adherence (p = 0.0001). Consistent with self-efficacy theory, improvement in self-efficacy over time supported greater weight loss. Adherence to the fat gram goal also influenced weight loss.

Indexed as

Self EfficacyWeight LossAdolescentAdultBody WeightCognitive Behavioral TherapyDietary FatsDiet, Fat-RestrictedDiet, ReducingDiet, VegetarianEnergy IntakeFeeding BehaviorFemaleHumansMaleMiddle AgedDietary Fats

Identifiers

PMID17963038

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.