Predictors of psychological treatment outcomes for common mental health problems (CMHP) in Improving Access to Psychological Therapies (IAPT) service users

ISRCTN ISRCTN10670435
DOI https://doi.org/10.1186/ISRCTN10670435
IRAS number 297739
Secondary identifying numbers IRAS 297739, CPMS 51250
Submission date
21/12/2022
Registration date
22/12/2022
Last edited
15/08/2024
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Mental and Behavioural Disorders
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English Summary

Background and study aims
Psychological therapies are helpful in treating depression and anxiety and half of the treated adults do recover. However, it is not clear whether older people are helped more or less than younger people. In this study, we aim to investigate the predictors of psychological treatment outcomes for common mental health problems in adults (18+ years) in the IAPT services and secondly, whether these predictors affect psychological treatment outcomes differently for working age (18-64 years) and older adults (65+ years).

Who can participate?
The study aims to recruit 700 participants in total, who are aged 18 years or over and are offered treatment in the IAPT service for common mental health problems.

What does the study involve?
Participants will be asked to complete a baseline questionnaire before the start of their treatment. These baseline measures will be complemented by routinely collected data from the IAPT systems after the completion of treatment.

What are the possible benefits and risks of participating?
By taking part in the study, participants will help us learn for whom treatment for common mental health problems works best or least. This will help NHS services plan what to offer to others. Thinking about our thoughts and feelings of low mood and anxiety, stressful life events and their impact can be helpful. However, it can also be difficult to do. If a participant feels upset answering any of the questions,

When is the study starting and how long is it expected to run for?
December 2021 to March 2024

Where is the study run from?
University of Sussex (UK)

Who is funding the study?
Mental Health Research UK

Who is the main contact?
Alexandra Schmidt, as2085@sussex.ac.uk

Contact information

Miss Alexandra Schmidt
Principal Investigator

University of Sussex
Pevensey 1, 2C1
Falmer
Brighton
BN1 9QH
United Kingdom

ORCiD logoORCID ID 0000-0002-4359-6284
Phone +44 7810870572
Email as2085@sussex.ac.uk

Study information

Study designMulti-centre observational cohort study
Primary study designObservational
Secondary study designCohort study
Study setting(s)Home, Other therapist office, Telephone
Study typeTreatment
Participant information sheet Not available in web format, please use the contact details to request a patient information sheet.
Scientific titlePredictors of psychological treatment outcomes for CMHP in IAPT
Study acronymPROPEL
Study hypothesis1. What are the predictors of psychological treatment outcomes for common mental health problems in adults (18+ years) in the Improving Access to Psychological Therapies (IAPT) services?
2. Do these factors affect psychological treatment outcomes differently for older (65+ years) and working-age adults (18-64 years)?
Ethics approval(s)Approved 24/12/2021, South Central-Hampshire B Research Ethics Committee (Health Research Authority, 2 Redman Place, Stratford, London, E20 1JQ, UK; +44 20 7104 8289; hampshireb.rec@hra.nhs.uk), ref: 21/SC/0387
ConditionCommon mental health problems, such as depression and/or any anxiety disorder, e.g. generalised anxiety disorder, panic disorder, phobias, PTSD, OCD.
InterventionParticipants will be invited to take part in the study after having been accepted into the IAPT service, but before the start of treatment. Once consented, participants will be asked to complete a questionnaire with different measures - these form the baseline measures. After the completion of treatment, a set of routinely collected measures by IAPT will be obtained, including pre- and post-treatment symptom severity. Analyses will be run to ascertain if any factors obtained at baseline are associated with treatment outcome.

The total duration of treatment and follow-up depends on the individual treatment each participant receives and how many sessions they attend.
Intervention typeBehavioural
Primary outcome measureRecovery and change in symptom severity as measured by the scores on the corresponding scale for each presenting problem (below). These measures are routinely taken in the IAPT service before the start of therapy (T0) and post-therapy (T1):
1. Depression symptom severity measured using The Patient Health Questionnaire (PHQ-9)
2. Generalised anxiety measured using the Generalised Anxiety Disorder Assessment (GAD-7)
3. Obsessive-compulsive disorder measured using the Obsessive-Compulsive Inventory (OCI)
4. Social phobia measured using the Social Phobia Inventory (SPIN)
5. Agoraphobia measured using the Agoraphobia-Mobility Inventory (MI)
6. PTSD measured using PTSD Checklist for DSM-5 (PCL-5)
7. Panic disorder severity measured using the Panic Disorder Severity Scale (PDSS)
Secondary outcome measuresDaily occupational and social functioning measured using The Work and Social Adjustment Scale (WSAS) before the start of therapy (T0) and post-therapy (T1).
Overall study start date24/12/2021
Overall study end date31/03/2024

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit18 Years
SexBoth
Target number of participants700
Total final enrolment1218
Participant inclusion criteria1. Be aged 18 years or over
2. Are offered treatment in the IAPT service in step 2 or step 3 of depression and/or an anxiety disorder
3. Read and understand English at the required level in order to respond to the PIS and the questionnaire
Participant exclusion criteria1. Patients under the age of 18 years
Recruitment start date10/06/2022
Recruitment end date31/03/2023

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centres

Sussex Partnership NHS Foundation Trust
Trust Hq
Swandean
Arundel Road
Worthing
BN13 3EP
United Kingdom
Avon and Wiltshire Mental Health Partnership NHS Trust
Bath NHS House
Newbridge Hill
Bath
BA1 3QE
United Kingdom
Humber Teaching NHS Foundation Trust
Trust Hq, Willerby Hill
Beverley Road
Willerby
Hull
HU10 6ED
United Kingdom
North East London NHS Foundation Trust
West Wing
C E M E Centre
Marsh Way
Rainham
RM13 8GQ
United Kingdom
Oxleas NHS Foundation Trust
Pinewood House
Pinewood PLACE
Dartford
DA2 7WG
United Kingdom
South West London & St George's Mental Health NHS Trust
Springfield University Hospital
Glenburnie Road
London
SW17 7DJ
United Kingdom
Cambridgeshire and Peterborough NHS Foundation Trust
Elizabeth House
Fulbourn Hospital
Fulbourn
Cambridge
CB21 5EF
United Kingdom
East London NHS Foundation Trust
Robert Dolan House
9 Alie Street
London
E1 8DE
United Kingdom
Southern Health NHS Foundation Trust
Tatchbury Mount Hospital
Calmore
Southampton
SO40 2RZ
United Kingdom
Berkshire Healthcare NHS Foundation Trust
Fitzwilliam House
Skimped Hill Lane
Bracknell
RG12 1BQ
United Kingdom
Cheshire and Wirral Partnership NHS Foundation Trust
Trust Headquarters Redesmere
The Countess of Chester Health Park
Liverpool Road
Chester
CH2 1BQ
United Kingdom
Bradford District Care NHS Foundation Trust
New Mill
Victoria Road
Saltaire
Shipley
BD18 3LD
United Kingdom
Solent NHS Trust Headquarters
Highpoint Venue
Bursledon Road
Southampton
SO19 8BR
United Kingdom
Derbyshire Healthcare NHS Foundation Trust
Trust Headquarters
Kingsway Hospital
Kingsway
Derby
DE22 3LZ
United Kingdom
Surrey and Borders Partnership NHS Foundation Trust
18 Mole Business Park
Randalls Road
Leatherhead
KT22 7AD
United Kingdom
Sussex Community NHS Foundation Trust
Brighton General Hospital
Elm Grove
Brighton
BN2 3EW
United Kingdom
Hertfordshire Partnership University NHS Foundation Trust
The Colonnades
Beaconsfield Close
Hatfield
AL10 8YE
United Kingdom
Norfolk and Suffolk NHS Foundation Trust
Hellesdon Hospital
Drayton High Road
Norwich
NR6 5BE
United Kingdom
Cumbria, Northumberland, Tyne & Wear NHS Foundation Trust
St. Nicholas Hospital
Gosforth
Newcastle upon Tyne
NE3 3XT
United Kingdom
Midlands Partnership NHS Foundation Trust
Trust Headquarters
St Georges Hospital
Corporation Street
Stafford
ST16 3SR
United Kingdom
Dorset Healthcare University NHS Foundation Trust
Sentinel House
4-6 Nuffield Road
Nuffield Industrial Estate
Poole
BH17 0RB
United Kingdom

Sponsor information

University of Sussex
University/education

Falmer
Brighton
BN1 9RH
England
United Kingdom

Phone +44(0)1273 872748
Email researchsponsorship@sussex.ac.uk
Website http://www.sussex.ac.uk/
ROR logo "ROR" https://ror.org/00ayhx656

Funders

Funder type

Charity

Mental Health Research UK
Government organisation / Trusts, charities, foundations (both public and private)
Alternative name(s)
Mental Health Research in United Kingdom, MHRUK
Location
United Kingdom

Results and Publications

Intention to publish date31/12/2024
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryData sharing statement to be made available at a later date
Publication and dissemination planPlanned publication in a high-impact peer-reviewed journal.
IPD sharing planThe data sharing plans for the current study are unknown and will be made available at a later date.

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Protocol file version 6 04/08/2022 22/12/2022 No No
HRA research summary 28/06/2023 No No
Statistical Analysis Plan 15/08/2024 No No

Additional files

42942 Protocol_v6 04Aug2022.pdf
ISRCTN10670435 Propel_SAP.pdf

Editorial Notes

15/08/2024: The statistical analysis plan was uploaded as an additional file.
13/03/2024: The following changes have been made:
1. The intention to publish date was changed from 01/09/2024 to 31/12/2024.
2. The total final enrolment was added.
16/02/2023: The study setting has been changed from ‘Other’.
22/12/2022: Trial's existence confirmed by South Central-Hampshire B Research Ethics Committee.