Evidence map›Paper›PMID 33397459›Full record

Trial reportTrials2021

A randomised controlled trial comparing palate surgery at 6 months versus 12 months of age (the TOPS trial): a statistical analysis plan.

Elizabeth J Conroy, Rachael Cooper, William Shaw, Christina Persson, Elisabeth Willadsen, Kevin J Munro, Paula R Williamson, Gunvor Semb, Tanya Walsh, Carrol Gamble and 1 more

Registry-linked trialOpen access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Trials, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00993551 (Timing of Primary Surgery for Cleft Palate), which is not on this map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.7field-weighted citation impact, top 15% 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.

NCT00993551 nacompletednot on this map

Timing of Primary Surgery for Cleft Palate

TypeinterventionalSponsorKevin MunroRan2010 to 2021Enrolled558ConditionsCleft PalateArmsprimary surgery for cleft palate
3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 11 citations in OpenAlex.

  1. Trial
  2. Timing of Primary Surgery for Cleft Palate.The New England journal of medicine · 2023
    Trial
  3. Review
  4. Analysis and Reporting of Randomized Trials in Cleft Palate Surgery: Learning from the Timing of Primary Surgery (TOPS) Trial.The Cleft palate-craniofacial journal : official publication of the American Cleft Palate-Craniofacial Association · 2025
    Article
  5. Adapting Elements of Cleft Care Protocols in Low- and Middle-income Countries During and After COVID-19: A Process-driven Review With Recommendations.The Cleft palate-craniofacial journal : official publication of the American Cleft Palate-Craniofacial Association · 2023
    Article
  6. Article
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

11 authors at 3 institutions in 3 countries.

Elizabeth J ConroyLiverpool Clinical Trials Centre, University of Liverpool, a member of Liverpool Health Partners, Institute of Child Health, Alder Hey Children's NHS Foundation Trust, Liverpool, L12 2AP, UK. ejconroy@liverpool.ac.uk.ORCID http://orcid.org/0000-0003-4858-727X
Rachael CooperLiverpool Clinical Trials Centre, University of Liverpool, a member of Liverpool Health Partners, Institute of Child Health, Alder Hey Children's NHS Foundation Trust, Liverpool, L12 2AP, UK.ORCID https://orcid.org/0000-0002-4741-6818
William ShawSchool of Medical Sciences, Division of Dentistry, The University of Manchester, Manchester, UK.ORCID https://orcid.org/0000-0002-3208-6000
Christina PerssonSchool of Medical Sciences, Division of Dentistry, The University of Manchester, Manchester, UK.ORCID https://orcid.org/0000-0002-7860-1573
Elisabeth WilladsenSchool of Medical Sciences, Division of Dentistry, The University of Manchester, Manchester, UK.ORCID https://orcid.org/0000-0001-9013-8764
Kevin J MunroManchester Centre for Audiology and Deafness, School of Health Sciences, The University of Manchester, Manchester, UK.ORCID https://orcid.org/0000-0001-6543-9098
Paula R WilliamsonLiverpool Clinical Trials Centre, University of Liverpool, a member of Liverpool Health Partners, Institute of Child Health, Alder Hey Children's NHS Foundation Trust, Liverpool, L12 2AP, UK.ORCID https://orcid.org/0000-0001-9802-6636
Gunvor SembSchool of Medical Sciences, Division of Dentistry, The University of Manchester, Manchester, UK.
Tanya WalshSchool of Medical Sciences, Division of Dentistry, The University of Manchester, Manchester, UK.
Carrol GambleLiverpool Clinical Trials Centre, University of Liverpool, a member of Liverpool Health Partners, Institute of Child Health, Alder Hey Children's NHS Foundation Trust, Liverpool, L12 2AP, UK.ORCID https://orcid.org/0000-0002-3021-1955
TOPS trial management group
University of Liverpool · GBUniversity of Manchester · GBUniversity of Copenhagen · DK

Funding

TOPS (Timing of Primary Surgery for Cleft Palate) trial Follow-upU01DE018664 · NIDCR · UNIVERSITY OF MANCHESTER · PI MUNRO, KEVIN J, SHAW, WILLIAM CHRISTIE · 2008 to 2019
$13.2M
Timing of Primary Surgery for Cleft PalateU01DE018837 · NIDCR · UNIVERSITY OF LIVERPOOL · PI WILLIAMSON, PAULA · 2008 to 2014
$1.3M
Protocol for Multicentre Trials of Cleft Palate SurgeryR21DE015128 · NIDCR · UNIVERSITY OF MANCHESTER · PI SHAW, WILLIAM C · 2005 to 2005
$189k
NIDCR NIH HHS R21 DE015128NIDCR NIH HHS R21DE15128, U01DE018664 and U01DE018837NIDCR NIH HHS U01 DE018664NIDCR NIH HHS U01 DE018837
6 · The paper itself

Abstract

backgroundCleft palate is among the most common birth abnormalities. The success of primary surgery in the early months of life is crucial for successful feeding, hearing, dental development, and facial growth. Over recent decades, age at palatal surgery in infancy has reduced. The Timing Of Primary Surgery for cleft palate (TOPS) trial aims to determine whether, in infants with cleft palate, it is better to perform primary surgery at age 6 or 12 months (corrected for gestational age). METHODS/

designThe TOPS trial is an international, two-arm, parallel group, randomised controlled trial. The primary outcome is insufficient velopharyngeal function at 5 years of age. Secondary outcomes, measured at 12 months, 3 years, and 5 years of age, include measures of speech development, safety of the procedure, hearing level, middle ear function, dentofacial development, and growth. The analysis approaches for primary and secondary outcomes are described here, as are the descriptive statistics which will be reported. The TOPS protocol has been published previously. DISCUSSION: This paper provides details of the planned statistical analyses for the TOPS trial and will reduce the risk of outcome reporting bias and data-driven results.

trial registrationClinicalTrials.gov NCT00993551 . Registered on 9 October 2009.

Indexed as

Cleft LipCleft PalateChildCyclic N-OxidesHumansInfantTreatment OutcomeCyclic N-OxidesTOPSComplex interventionPalatal surgeryRandomised controlled trialSommerlad techniqueStatistical analysis planSurgical interventionTrial analysisTrial designUnilateral cleft palateVelopharyngeal function

Identifiers

PMID33397459
PMCPMC7780678
OpenAlexW3119745479

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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.