PTSD Coach Sweden: Evaluating a Self-help Mobile App for Posttraumatic Stress in a Community Sample

Study Overview
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Brief Summary
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Individuals who experience potentially traumatic events might develop long-lasting mental health problems. Limitations to health care resources, particularly in the context of mass disasters, indicate that self-help interventions could serve as important complementary offers to people in need. The aim of this study is to evaluate whether the Swedish version of the Swedish version of the PTSD Coach self-help smartphone application can reduce levels of posttraumatic stress and related difficulties. The study is a randomized controlled trial in which participants' levels of posttraumatic stress and related difficulties after three months use of PTSD Coach will be compared to a waitlist condition. Additionally, in order to better understand the interplay between app use and health status, participants in both groups will receive text messages in which they are asked to respond to a small number of very brief questions about specific behaviors and current health status for three weeks during the intervention period.

Detailed Description
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A majority of humans experience a potentially traumatic event during their lifetime, and many experience more than one. These events are of overwhelming emotional nature and have the capacity to evoke intensive distress. For many people, the distress dissipates either spontaneously or with the help from professional supports over the course of a couple of weeks. However, a substantial minority of people go on to develop significant levels of posttraumatic stress. Chronic posttraumatic stress is often experienced together with clinical levels of other forms of psychopathology such as depression or anxiety disorders and the chronic condition can become debilitating over many years. There are effective interventions, however, they are as of yet difficult to access. An uncontrolled pilot study of the Swedish PTSD Coach smartphone app indicated favorable outcomes and feasibility of the intervention (Cernvall, Sveen, Johannesson, & Arnberg, 2018). The app includes four modules: psychoeducation, rating and monitoring of distress, information about help and support, and strategies to cope with distress. The app is designed to be used with or without internet connection and uses little space on the smartphone. This study will investigate whether the Swedish version of the PTSD Coach self-help smartphone application is beneficial for people who experience elevated levels of posttraumatic stress after a potentially traumatic event. The study is a randomized controlled trial with two conditions. In the intervention condition, participants are allowed free use of the PTSD Coach smartphone app. The control group is a waitlist condition. The intervention will take place during three months and is powered to detect a between-group effect size at the post-intervention assessment of d=0.5. This study will also use an intensive longitudinal data collection method within the intervention period in order to better understand the interplay between app use and health status. Participants in both groups will receive text messages in which they are asked to respond to six very brief questions about specific behaviors and current health status for three weeks during the intervention period. After the intervention period, participants across groups will be compared on a number of outcome variables related to posttraumatic stress, other mental health issues, daily function, and measures on healthcare consumption. The participants in the waitlist group will then be given access to the PTSD Coach app and both groups will be followed for two additional assessments after six and nine months.

Official Title
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PTSD Coach Sweden: Evaluating a Self-help Mobile App for Posttraumatic Stress in a Community Sample

Conditions
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Posttraumatic Stress

Intervention / Treatment
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* Behavioral: Swedish PTSD Coach smartphone app


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age ≥ 18 years Adequate Swedish language comprehension Experienced a potentially traumatic event according to DSM-5 PTSD Criterion A during the past 2 years At least mild forms of posttraumatic stress, i.e., PCL-5 total score ≥ 10 Access to smartphone able to run PTSD Coach app Exclusion Criteria: Positive screening for bipolar disorder, psychotic disorder, ongoing substance disorder, or severe suicidality according to Mini International Neuropsychiatric Interview version 7.0.0 current or planned psychological treatment within next three months current use of medication that may influence psychological treatment change in medication in the past months or planned changes within next three months ongoing potential traumatic context (e.g., ongoing domestic violence)

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Intervention<br>Free access to the Swedish PTSD Coach smartphone app for three months. | Behavioral: Swedish PTSD Coach smartphone app<br>* Self-help smartphone app targeted towards posttraumatic stress that includes psychoeducation, rating/monitoring of distress, lists of support and treatment resources, and strategies for coping with distress.<br>|
| No Intervention: Waitlist<br>Delayed access to the Swedish PTSD Coach smartphone app. Access is given after post-intervention data collection at three months. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| PTSD Checklist for DSM-5 (PCL-5) | Self-report questionnaire for posttraumatic stress | 3 months (post) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| PTSD Checklist for DSM-5 | Self-report questionnaire for posttraumatic stress | 6 months (3 months after intervention end) | 
| PTSD Checklist for DSM-5 | Self-report questionnaire for posttraumatic stress | 9 months (6 months after intervention end) | 
| Patient Health Questionnaire (PHQ-9) | Self-report questionnaire for depressive symptoms | 3 months (post intervention) | 
| PHQ-9 | Self-report questionnaire for depressive symptoms | 6 months (3 months after intervention end) | 
| PHQ-9 | Self-report questionnaire for depressive symptoms | 9 months (6 months after intervention end) | 
| WHO Disability Assessment Schedule 2.0 (WHODAS) | Self-report questionnaire for functional disability, 12-item version | 3 months (post intervention) | 
| WHODAS | Self-report questionnaire for functional disability, 12-item version | 6 months (3 months after intervention end) | 
| WHODAS | Self-report questionnaire for functional disability, 12-item version | 9 months (6 months after intervention end) | 
| Trimbos Questionnaire for Costs (TiC-P) | Self-report questionnaire for healthcare use and productivity loss | 3 months (post intervention) | 
| TiC-P | Self-report questionnaire for healthcare use and productivity loss | 6 months (3 months after intervention end) | 
| TiC-P | Self-report questionnaire for healthcare use and productivity loss | 9 months (6 months after intervention end) | 
| Patient Health Questionnaire for physical symptoms (PHQ-15) | Self-report questionnaire for physical symptoms | 3 months (post intervention) | 
| PHQ-15 | Self-report questionnaire for physical symptoms | 6 months (3 months after intervention end) | 
| PHQ-15 | Self-report questionnaire for physical symptoms | 9 months (6 months after intervention end) | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Posttraumatic Stress