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Trial registered on ANZCTR


Registration number
ACTRN12613001174774
Ethics application status
Approved
Date submitted
21/10/2013
Date registered
25/10/2013
Date last updated
24/02/2016
Type of registration
Prospectively registered

Titles & IDs
Public title
Online treatment for depression in people with osteoarthritis: a randomised controlled trial
Scientific title
A randomised controlled trial comparing Internet based cognitive behaviour therapy (iCBT) for depression in patients with osteoarthritis vs. treatment as usual on depression symptoms.
Secondary ID [1] 283424 0
Nil
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Depression 290337 0
Condition category
Condition code
Mental Health 290737 290737 0 0
Depression

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
All intervention participants will separately complete 6 lessons of Internet based cognitive behavioural therapy (iCBT) about the management of symptoms of depression over 10 weeks. One lesson will be completed every 7 to 14 days (it will become available after the preceding lesson has been completed, with a minimum of 7 days between lessons and a maximum of 14 days). Each lesson will take about 15 minutes to complete. Participants will have access to summaries of each lesson, homework exercises, extra resources, email contact from the Clinician (Registered Psychologist) after completion of the first two lessons, then as required. The participant is also able to email or phone the clinician at any point during the trial as required. The participant completes a measure of psychological distress before each lesson and if their scores increase by one or more standard deviations the clinician is automatically alerted and contact with the participant either by phone or email is initiated.

Strategies used to improved adherence to intervention protocols and procedures for monitoring adherence include: automated email reminders, monitoring the downloading of homework, collection of data on how long participants spent reading lessons and practising skills.
Intervention code [1] 288149 0
Behaviour
Comparator / control treatment
Treatment as usual (TAU) waitlist control group. These participants remain on the waitlist and receive their usual treatment for osteoarthritis until the treatment groups have completed their treatment and 3-month follow-up (24 weeks). At that time (24 weeks) the waitlist control group will be offered the same iCBT program for depression.
Control group
Active

Outcomes
Primary outcome [1] 290737 0
Reductions in the Patient Health Questionnaire – 9-Item (PHQ-9)
Timepoint [1] 290737 0
Baseline, mid-treatment (week 4), 1 week post-treatment (week 11), and 3 months after post-treatment (week 24).
Primary outcome [2] 290738 0
Reductions in psychological distress according to the Kessler-10 (K10).
Timepoint [2] 290738 0
Baseline, mid-treatment (week 4), 1 week post-treatment (week 11), and 3 months after post-treatment (week 24).
Secondary outcome [1] 305117 0
Reductions in the SF-12 – a 12 item validated measure of functional health and wellbeing.
Timepoint [1] 305117 0
Baseline, 1 week post-treatment (week 11), and 3 months after post-treatment (week 24).
Secondary outcome [2] 305118 0
Reductions in the Generalized Anxiety Disorder 7-Item (GAD-7).
Timepoint [2] 305118 0
Baseline, 1 week post-treatment (week 11), and 3 months after post-treatment (week 24).
Secondary outcome [3] 305119 0
Change in the Pain Catastrophising Scale – (PCS)
Timepoint [3] 305119 0
Baseline, 1 week post-treatment (week 11), and 3 months after post-treatment (week 24).
Secondary outcome [4] 305120 0
Change in the Arthritis Self Efficacy Scale.
Timepoint [4] 305120 0
Baseline, 1 week post-treatment (week 11), and 3 months after post-treatment (week 24).
Secondary outcome [5] 305121 0
Change in the Western Ontario and McMaster (WOMAC) Osteoarthritis.
Timepoint [5] 305121 0
Baseline, 1 week post-treatment (week 11), and 3 months after post-treatment (week 24).
Secondary outcome [6] 305122 0
PainDetect Questionnaire (PD-Q).
Timepoint [6] 305122 0
The PD-Q will be used to assess the relationship between depressive symptoms severity and neuropathic pain measured at baseline.
Secondary outcome [7] 305123 0
Treatment Credibility/Expectancy Questionnaire (CEQ).
Timepoint [7] 305123 0
Measured at baseline.

Eligibility
Key inclusion criteria
Diagnosis of current Major Depressive Disorder (MDD) based on the Mini International Neuropsychiatric Interview Version 5.0.0.

Diagnosis of symptomatic Osteoarthritis based upon radiographic criteria and pain on most days. The recruitment pathway ensures all potential participants (i.e., those who are informed about the study) meet this eligibility criterion.


Age 50+

Prepared to provide name, phone number and address, and to provide the name and address of a local general practitioner, and to provide informed consent.

English language skills equivalent to a School Certificate level.

Have access to a phone and a computer with regular Internet access and a printer.
Minimum age
50 Years
Maximum age
No limit
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria
Severe depression (PHQ-9 >23) and/ or current suicidality (PHQ-9 Q9=2 or 3).

If taking medication for anxiety or depression, has been taking the same dose for less than 1 month or intended to change the dose during the course of the program.

Currently receiving CBT for depression or completed an iCBT or CBT program for depression in the past 6 months or intention to commence CBT for depression.

Psychosis, bipolar disorder, substance abuse or dependence.

Taking antipsychotics or benzodiazepines.

Study design
Purpose of the study
Treatment
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Participants apply online, followed by a telephone interview to confirm diagnosis via the Mini-International Neuropsychiatric Interview (MINI), a structured clinical interview.
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Participants will be randomized using a list generated prior to the study.

Allocation concealment will occur in the following way: A staff member not involved in the clinical trial will generate the sequence using computer software and place each choice in a sequentially numbered, opaque sealed and stapled envelope.
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?



Intervention assignment
Parallel
Other design features
Phase
Not Applicable
Type of endpoint/s
Efficacy
Statistical methods / analysis
Based on previous results, we anticipate the iCBT group to improve more than the TAU Control group by an ES of 0.8.

Assuming a more conservative ES of .60 for the secondary OA-specific outcome measures we will recruit 50 participants in each group (allowing for at least 20% potential attrition). Sample size is powered to have an 80% chance of detecting differences at p<.05.

Analyses will be undertaken using mixed-model repeated measures (MMRM) ANOVA with measurement occasion as a within-groups factor and intervention as a between-groups factor. Relationships between observations at different occasions will be modelled with an unstructured covariance
matrix. For each experimental group, planned contrasts will be used to compare changes from baseline to post-intervention and 3- month follow-up.

Recruitment
Recruitment status
Completed
Date of first participant enrolment
Anticipated
28/10/2013
Actual
26/11/2013
Date of last participant enrolment
Anticipated
Actual
6/10/2014
Date of last data collection
Anticipated
Actual
Sample size
Target
100
Accrual to date
Final
77
Recruitment in Australia
Recruitment state(s)
ACT,NSW,NT,QLD,SA,TAS,WA,VIC

Funding & Sponsors
Funding source category [1] 288148 0
Hospital
Name [1] 288148 0
St Vincent's Hospital, Sydney
Country [1] 288148 0
Australia
Primary sponsor type
Hospital
Name
St Vincent's Hospital
Address
St Vincent's Hospital
390 Victoria St
Darlinghurst NSW 2010
Australia
Country
Australia
Secondary sponsor category [1] 286866 0
Individual
Name [1] 286866 0
Professor Gavin Andrews
Address [1] 286866 0
Clinical Research Unit for Anxiety and Depression
390 Victoria St
Darlinghurst NSW 2010
Country [1] 286866 0
Australia

Ethics approval
Ethics application status
Approved
Ethics committee name [1] 290064 0
St Vincent's Hospital HREC
Ethics committee address [1] 290064 0
Ethics committee country [1] 290064 0
Australia
Date submitted for ethics approval [1] 290064 0
Approval date [1] 290064 0
15/10/2013
Ethics approval number [1] 290064 0
HREC/13/SVH/292

Summary
Brief summary
Trial website
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 43754 0
Prof Gavin Andrews
Address 43754 0
Clinical Research Unit for Anxiety and Depression 390 Victoria St
Darlinghurst NSW 2010
Country 43754 0
Australia
Phone 43754 0
+61 2 8382 1405
Fax 43754 0
Email 43754 0
gavina@unsw.edu.au
Contact person for public queries
Name 43755 0
Gavin Andrews
Address 43755 0
Clinical Research Unit for Anxiety and Depression 390 Victoria St
Darlinghurst NSW 2010
Country 43755 0
Australia
Phone 43755 0
+61 2 8382 1405
Fax 43755 0
Email 43755 0
gavina@unsw.edu.au
Contact person for scientific queries
Name 43756 0
Gavin Andrews
Address 43756 0
Clinical Research Unit for Anxiety and Depression 390 Victoria St
Darlinghurst NSW 2010
Country 43756 0
Australia
Phone 43756 0
+61 2 8382 1405
Fax 43756 0
Email 43756 0
gavina@unsw.edu.au

No information has been provided regarding IPD availability


What supporting documents are/will be available?

No Supporting Document Provided



Results publications and other study-related documents

Documents added manually
No documents have been uploaded by study researchers.

Documents added automatically
No additional documents have been identified.