Statistical analysis plan for the SQUEEZE trial: A trial to determine whether septic shock reversal is quicker in pediatric patients randomized to an early goal-directed fluid-sparing strategy vs. usual care (SQUEEZE)
Melissa J. Parker MD, MSc , Gary Foster PhD , Alison Fox-Robichaud MD, MSc , Karen Choong MB BCh, MSc , Lawrence Mbuagbaw MD, PhD , Lehana Thabane PhD , With the SQUEEZE Trial Steering Committee and on behalf of the SQUEEZE Trial Investigators, the Canadian Critical Care Trials Group, Pediatric Emergency Research Canada, and the Canadian Critical Care Translational Biology Group
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Abstract
Background
The SQUEEZE trial is a multicentred randomized controlled trial which seeks to determine the optimal approach to fluid resuscitation in paediatric septic shock. SQUEEZE also includes a nested translational study, SQUEEZE-D, investigating the value of plasma cell-free DNA for prediction of clinical outcomes.
Objective
To present a pre-specified statistical analysis plan (SAP) for the SQUEEZE trial prior to finalizing the trial data set and prior to commencing data analysis.
Design
SQUEEZE is a pragmatic, two-arm, open-label, prospective multicentre randomized controlled trial.
Setting
Canadian paediatric tertiary care centres.
Participants
Paediatric patients with suspected sepsis and persistent signs of shock in need of ongoing resuscitation. Sample size target: 400 participants.
Interventions
The trial is designed to compare a fluid-sparing resuscitation strategy to usual care.
Main outcome measures
The primary outcome for the SQUEEZE trial is the time to shock reversal (in hours). The primary outcome analysis will assess the difference in time to shock reversal between the intervention and control groups, reported as point estimate with 95% confidence intervals. The statistical test for the primary analysis will be a two-sided t-test. Secondary outcome measures include clinical outcomes and adverse events including measures of organ dysfunction and mortality outcomes.
Results
The SAP presented here is reflective of and where necessary clarifies in detail the analysis plan as presented in the trial protocol. The SAP includes a mock CONSORT diagram, figures and tables. Data collection methods are summarized, primary and secondary outcomes are defined, and outcome analyses are described.
Conclusions
We have developed a statistical analysis plan for the SQUEEZE Trial for transparency and to align with best practices. Analysis of SQUEEZE Trial data will adhere to the SAP to reduce the risk of bias.
Registration
ClinicalTrials.gov identifiers: Definitive trial NCT03080038; Registered Feb 28, 2017. Pilot Trial NCT 01973907; Registered Oct 27, 2013.
期刊介绍：
ritical Care and Resuscitation (CC&R) is the official scientific journal of the College of Intensive Care Medicine (CICM). The Journal is a quarterly publication (ISSN 1441-2772) with original articles of scientific and clinical interest in the specialities of Critical Care, Intensive Care, Anaesthesia, Emergency Medicine and related disciplines.
The Journal is received by all Fellows and trainees, along with an increasing number of subscribers from around the world.
The CC&R Journal currently has an impact factor of 3.3, placing it in 8th position in world critical care journals and in first position in the world outside the USA and Europe.
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