Evidence map›Paper›PMID 29973211›Full record

Trial reportNutrition journal2018

Greater improvements in diet quality among overweight participants following a group-based commercial weight loss programme than those receiving support to lose weight in primary care.

Gina L Ambrosini, Ivonne Solis-Trapala, Amy L Ahern, Nicholas R Fuller, Christina Holzapfel, Hans Hauner, Ian D Caterson, Susan A Jebb

Open access · goldAbstract readComparative StudyMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in Nutrition journal, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
2.1field-weighted citation impact, top 11% of its field
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

2 citing papers in PubMed, 10 citations in OpenAlex.

  1. Trial
  2. Trial
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

8 authors at 3 institutions in 3 countries.

Gina L AmbrosiniSchool of Population and Global Health (M431), University of Western Australia, 35 Stirling Highway, Crawley, Perth, 6009, Western Australia, Australia. Gina.Ambrosini@uwa.edu.au.ORCID 0000-0003-1001-4265
Ivonne Solis-TrapalaMedical Research Council Elsie Widdowson Laboratory, Cambridge, CB1 9NL, England.
Amy L AhernMedical Research Council Elsie Widdowson Laboratory, Cambridge, CB1 9NL, England.
Nicholas R FullerThe Boden Institute of Obesity, Nutrition, Exercise and Eating Disorders, Charles Perkins Centre, The University of Sydney, Sydney, NSW, 2006, Australia.
Christina HolzapfelElse Kroener-Fresenius-Center for Nutritional Medicine, Faculty of Medicine, Technical University of Munich, Munich, Germany.
Hans HaunerElse Kroener-Fresenius-Center for Nutritional Medicine, Faculty of Medicine, Technical University of Munich, Munich, Germany.
Ian D CatersonThe Boden Institute of Obesity, Nutrition, Exercise and Eating Disorders, Charles Perkins Centre, The University of Sydney, Sydney, NSW, 2006, Australia.
Susan A JebbMedical Research Council Elsie Widdowson Laboratory, Cambridge, CB1 9NL, England.
MRC Human Nutrition Research · GBFresenius (Germany) · DEThe University of Sydney · AU

Funding

Medical Research Council G0501294Medical Research Council MC_U105960389Medical Research Council MC_UU_12015/4Medical Research Council U105960389
6 · The paper itself

Abstract

backgroundRelatively little is known about dietary changes and their relationships with weight change during behavioural weight loss interventions. In a secondary analysis of data from a multicentre RCT, we investigated whether greater improvements in diet would be achieved by overweight adults following a 12 month group-based commercial weight loss programme (CP) than those receiving standard care (SC) in primary practice, and if these dietary changes were associated with greater weight loss.

methodsAdults with a BMI 27-35 kg/m

resultsThe CP group demonstrated greater mean weight loss than the SC group at 6 months (3.3 kg, 95% CI: 2.2, 4.4) and 12 months (3.3 kg, 95% CI: 2.1, 4.5). Diet quality improved in both intervention groups at 6 and 12 months. However, the CP group (n = 228) achieved significantly greater mean reductions in energy intake (mean difference; 95% CI: - 503 kJ/d; - 913, - 93), dietary energy density (- 0.48 MJ/g; - 0.81, - 0.16), total fat (- 6.9 g/d; - 11.9, - 1.8), saturated fat (- 3.3 g/d; - 5.4, - 1.1), and significantly greater mean increases in fibre density (0.30 g/MJ; 0.15, 0.44) at 6 months than the SC group (n = 239). Similar differences persisted at 12 months and the CP group showed greater mean increases in protein density (0.65 g/MJ). In both groups, weight loss was associated with increased fibre density (0.68 kg per g/MJ, 95% CI: 0.08, 1.27) and protein density (0.26 kg per g/MJ, 95% CI: 0.10, 0.41).

conclusionsFollowing a group-based commercial program led to greater improvements in diet quality than standard care. Increases in dietary protein and fibre density were independently associated with weight loss in both behavioural weight loss interventions. Greater increases in protein and fibre density in the commercial program likely contributed to their greater weight loss.

trial registrationISRCTN: ISRCTN85485463 Registered 03/08/2007 Retrospectively Registered.

Indexed as

Primary Health CareWeight Reduction ProgramsAdultAustraliaBehavior TherapyBody Mass IndexDietary FiberDietary ProteinsDiet, ReducingEnergy IntakeFemaleHumansMaleMiddle AgedOverweightUnited KingdomDietary FiberDietary ProteinsBehavioural interventionDietary changeDiet qualityRandomised controlled trialWeight loss

Identifiers

PMID29973211
PMCPMC6032789
OpenAlexW2810512502

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.