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Trials
Published in: Trials 1/2023

Open Access 01-12-2023 | Study protocol

Statistical analysis plans for two randomised controlled trials of the Narrative Experiences Online (NEON) Intervention: impact of receiving recorded mental health recovery narratives on quality of life in people experiencing psychosis (NEON) and people experiencing non-psychosis mental health problems (NEON-O)

Authors: Clare Robinson, Chris Newby, Stefan Rennick-Egglestone, Joy Llewellyn-Beardsley, Fiona Ng, Rachel A. Elliott, Mike Slade

Published in: Trials | Issue 1/2023

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Abstract

Background

Mental health recovery narratives are a first-hand account of an individual’s recovery from mental health distress, access to narratives can aid recovery. The NEON Intervention is a web-application providing access to a managed collection of narratives. We present the statistical analysis plan for assessing the effectiveness of the NEON Intervention in improving quality of life at 1-year post-randomisation. We pay particular focus on the statistical challenges encountered due to the online nature of this trial.

Methods and design

The NEON Intervention is assessed in two trial populations, one for people with experience of psychosis in the last 5 years, and mental health distress in the last six months (NEON Trial) and one for people with experience of non-psychosis mental health problems (NEON-O Trial). Both NEON trials are two-arm randomised controlled superiority trials comparing the effectiveness of the NEON Intervention with usual care. The target sample size is 684 randomised participants for NEON and 994 for NEON-O. Participants were randomised centrally in a 1:1 ratio.

Results

The primary outcome is the mean score of subjective items on the Manchester Short Assessment of Quality-of-Life questionnaire (MANSA) at 52 weeks. Secondary outcomes are scores from the Herth Hope Index, Mental Health Confidence Scale, Meaning of Life questionnaire, CORE-10 questionnaire and Euroqol 5-Dimension 5-Level (EQ-5D-5L).

Conclusion

This manuscript is the statistical analysis plan (SAP) for the NEON trials. Any post hoc analysis, such as those requested by journal reviewers will be clearly labelled as such in the final trial reporting.
Trial registration
Both trials were prospectively registered. NEON Trial: ISRCTN11152837, registered on 13 August 2018. NEON-O Trial: ISRCTN63197153, registered on 9 January 2020.
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Metadata
Title
Statistical analysis plans for two randomised controlled trials of the Narrative Experiences Online (NEON) Intervention: impact of receiving recorded mental health recovery narratives on quality of life in people experiencing psychosis (NEON) and people experiencing non-psychosis mental health problems (NEON-O)
Authors
Clare Robinson
Chris Newby
Stefan Rennick-Egglestone
Joy Llewellyn-Beardsley
Fiona Ng
Rachel A. Elliott
Mike Slade
Publication date
01-12-2023
Publisher
BioMed Central
Published in
Trials / Issue 1/2023
Electronic ISSN: 1745-6215
DOI
https://doi.org/10.1186/s13063-023-07246-8

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