Gerry Armitage

Ian Watt

Jane O’Hara

John Wright

Kim Cocks

L Sheard

Laura Sheard

Rebecca Lawton

Rosemary McEachan

Trials

PubMed

Crossref

Erratum to: Evaluating the PRASE patient safety intervention - a multi-centre, cluster trial with a qualitative process evaluation: study protocol for a randomised controlled trial

Springer - Publisher Connector

Sheard, L

O'Hara, J

Armitage, G

Wright, J

Cocks, K

McEachan, R

Watt, I

Lawton, R

White Rose Research Online

ERRATUM Open AccessErratum to: Evaluating the PRASE patientsafety intervention - a multi-centre, clustertrial with a qualitative process evaluation:study protocol for a randomised controlledtrialLaura Sheard1,2*, Jane O’Hara1, Gerry Armitage1,3, John Wright1, Kim Cocks4, Rosemary McEachan5, Ian Watt4and Rebecca Lawton1,6ErratumUnfortunately, the original version of this article [1]contained an error. There was an error in the methodssection. It has been corrected below:Published paragraphEstimate of sample sizeThe study will be powered to detect a small to mediumdifference (effect size = 0.3) between the interventionand control groups with respect to the Patient SafetyThermometer score (See Outcome Measures for explan-ation of this score). A small to medium effect size seemsa reasonable assumption as each ward will be focussingon developing and implementing their own action plans,tailored using their initial feedback. The intervention istherefore specific to individual wards and may not impacton all areas measured by the Patient Safety Thermometer.In order to achieve 80 % power (with alpha = 0.05) with anaverage cluster size of 25 patients and assumed ICC of0.05, 32 wards will be required (16 per arm). This estimateof ICC seems reasonable for a trial in secondary care witha patient reported outcome [39].Amended paragraphEstimate of sample sizeThe study will be powered to detect a small to mediumdifference (effect size = 0.3) between the intervention andcontrol groups with respect to the PMOS score. A smallto medium effect size seems a reasonable assumptionas each ward will be focussing on developing andimplementing their own action plans, tailored usingtheir initial feedback. The intervention is thereforespecific to individual wards and may not impact on allareas measured by the PMOS. In order to achieve 80 %power (with alpha = 0.05) with an average cluster sizeof 25 patients and assumed ICC of 0.05, 32 wards willbe required (16 per arm). This estimate of ICC seemsreasonable for a trial in secondary care with a patientreported outcome [39].Author details1Yorkshire Quality & Safety Research Group, Bradford Institute for HealthResearch, Bradford Royal Infirmary, Bradford, England. 2the Yorkshire Quality& Safety Research Group, Bradford, England. 3School of Health Studies,University of Bradford, Bradford, England. 4York Trials Unit, Department ofHealth Sciences, University of York, York, England. 5Bradford Institute forHealth Research, Bradford Royal Infirmary, Bradford, England. 6Institute ofPsychological Sciences, Faculty of Medicine & Health, University of Leeds,Leeds, England.Received: 4 October 2016 Accepted: 12 October 2016Reference1. Sheard L, O’Hara J, Armitage G, Wright J, Cocks K, McEachan R, Watt I,Lawton R. Evaluating the PRASE patient safety intervention - a multi-centre, cluster trial with a qualitative process evaluation: study protocolfor a randomised controlled trial. Trials. 2014;15:420.* Correspondence: laura.sheard@bthft.nhs.uk1Yorkshire Quality & Safety Research Group, Bradford Institute for HealthResearch, Bradford Royal Infirmary, Bradford, England2the Yorkshire Quality & Safety Research Group, Bradford, England© The Author(s). 2016 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, andreproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link tothe Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver(http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.Sheard et al. Trials  (2016) 17:605 DOI 10.1186/s13063-016-1655-z

ERRATUM Open Access
Erratum to: Evaluating the PRASE patient
safety intervention - a multi-centre, cluster
trial with a qualitative process evaluation:
study protocol for a randomised controlled
trial
Laura Sheard1,2*, Jane O’Hara1, Gerry Armitage1,3, John Wright1, Kim Cocks4, Rosemary McEachan5, Ian Watt4
and Rebecca Lawton1,6
Erratum
Unfortunately, the original version of this article [1]
contained an error. There was an error in the methods
section. It has been corrected below:
Published paragraph
Estimate of sample size
The study will be powered to detect a small to medium
difference (effect size = 0.3) between the intervention
and control groups with respect to the Patient Safety
Thermometer score (See Outcome Measures for explan-
ation of this score). A small to medium effect size seems
a reasonable assumption as each ward will be focussing
on developing and implementing their own action plans,
tailored using their initial feedback. The intervention is
therefore specific to individual wards and may not impact
on all areas measured by the Patient Safety Thermometer.
In order to achieve 80 % power (with alpha = 0.05) with an
average cluster size of 25 patients and assumed ICC of
0.05, 32 wards will be required (16 per arm). This estimate
of ICC seems reasonable for a trial in secondary care with
a patient reported outcome [39].
Amended paragraph
Estimate of sample size
The study will be powered to detect a small to medium
difference (effect size = 0.3) between the intervention and
control groups with respect to the PMOS score. A small
to medium effect size seems a reasonable assumption
as each ward will be focussing on developing and
implementing their own action plans, tailored using
their initial feedback. The intervention is therefore
specific to individual wards and may not impact on all
areas measured by the PMOS. In order to achieve 80 %
power (with alpha = 0.05) with an average cluster size
of 25 patients and assumed ICC of 0.05, 32 wards will
be required (16 per arm). This estimate of ICC seems
reasonable for a trial in secondary care with a patient
reported outcome [39].
Author details
1Yorkshire Quality & Safety Research Group, Bradford Institute for Health
Research, Bradford Royal Infirmary, Bradford, England. 2the Yorkshire Quality
& Safety Research Group, Bradford, England. 3School of Health Studies,
University of Bradford, Bradford, England. 4York Trials Unit, Department of
Health Sciences, University of York, York, England. 5Bradford Institute for
Health Research, Bradford Royal Infirmary, Bradford, England. 6Institute of
Psychological Sciences, Faculty of Medicine & Health, University of Leeds,
Leeds, England.
Received: 4 October 2016 Accepted: 12 October 2016
Reference
1. Sheard L, O’Hara J, Armitage G, Wright J, Cocks K, McEachan R, Watt I,
Lawton R. Evaluating the PRASE patient safety intervention - a multi-
centre, cluster trial with a qualitative process evaluation: study protocol
for a randomised controlled trial. Trials. 2014;15:420.
* Correspondence: laura.sheard@bthft.nhs.uk
1Yorkshire Quality & Safety Research Group, Bradford Institute for Health
Research, Bradford Royal Infirmary, Bradford, England
2the Yorkshire Quality & Safety Research Group, Bradford, England
© The Author(s). 2016 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0
International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and
reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to
the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver
(http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
Sheard et al. Trials  (2016) 17:605 
DOI 10.1186/s13063-016-1655-z


http://dx.doi.org/10.1186/s13063-016-1655-z

Erratum to: Evaluating the PRASE patient safety intervention - a multi-centre, cluster trial with a qualitative process evaluation: study protocol for a randomised controlled trial

Abstract

Similar works

Full text

Available Versions

Crossref

Springer - Publisher Connector

White Rose Research Online

White Rose Research Online

Springer - Publisher Connector