Evidence map›Paper›PMID 30591059›Full record

ArticleBMC medicine2018

The SMILES trial: an important first step.

Felice N Jacka, Adrienne O'Neil, Catherine Itsiopoulos, Rachelle Opie, Sue Cotton, Mohammadreza Mohebbi, David Castle, Sarah Dash, Cathrine Mihalopoulos, Mary Lou Chatterton and 4 more

Abstract readLetterComment
In one paragraph

Article in BMC medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–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

3 citing papers in PubMed.

  1. Review
  2. Article
  3. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

14 authors.

Felice N JackaIMPACT Strategic Research Centre, Deakin University, Geelong, VIC, Australia. f.jacka@deakin.edu.au.
Adrienne O'NeilIMPACT Strategic Research Centre, Deakin University, Geelong, VIC, Australia.
Catherine ItsiopoulosDepartment of Rehabilitation, Nutrition and Sport, La Trobe University, Melbourne, VIC, Australia.
Rachelle OpieInstitute for Physical Activity and Nutrition, Deakin University, Geelong, VIC, Australia.
Sue CottonOrygen, The National Centre of Excellence in Youth Mental Health, Parkville, VIC, Australia.
Mohammadreza MohebbiIMPACT Strategic Research Centre, Deakin University, Geelong, VIC, Australia.
David CastleDepartment of Psychiatry, The University of Melbourne, Melbourne, VIC, Australia.
Sarah DashIMPACT Strategic Research Centre, Deakin University, Geelong, VIC, Australia.
Cathrine MihalopoulosCentre for Population Health Research, Deakin University, Geelong, VIC, Australia.
Mary Lou ChattertonCentre for Population Health Research, Deakin University, Geelong, VIC, Australia.
Laima BrazionisDepartment of Rehabilitation, Nutrition and Sport, La Trobe University, Melbourne, VIC, Australia.
Olivia M DeanIMPACT Strategic Research Centre, Deakin University, Geelong, VIC, Australia.
Allison HodgeCancer Intelligence and Epidemiology Division, Cancer Council Victoria, Melbourne, VIC, Australia.
Michael BerkIMPACT Strategic Research Centre, Deakin University, Geelong, VIC, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The SMILES trial was the first intervention study to test dietary improvement as a treatment strategy for depression. Molendijk et al. propose that expectation bias and difficulties with blinding might account for the large effect size. While we acknowledge the issue of expectation bias in lifestyle intervention trials and indeed discuss this as a key limitation in our paper, we observed a strong correlation between dietary change and change in depression scores, which we argue is consistent with a causal effect and we believe unlikely to be an artefact of inadequate blinding. Since its publication, our results have been largely replicated and our recent economic evaluation of SMILES suggests that the benefits of our approach extend beyond depression. We argue that the SMILES trial should be considered an important, albeit preliminary, first step in the field of nutritional psychiatry research.

Indexed as

Life StyleMajor Depressive DisorderAdultBiasDietHumansDepressionDietNutritionRandomised controlled trial

Identifiers

PMID30591059
PMCPMC6309069

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.