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Published Online: 31 January 2023

Therapeutic and Economic Benefits of Service Dogs Versus Emotional Support Dogs for Veterans With PTSD

Joan T. Richerson, M.S., D.V.M., Todd H. Wagner, Ph.D., Thad Abrams, M.D., Kelly Skelton, M.D., Ph.D., Kousick Biswas, Ph.D., Samantha Illarmo, M.P.H., Frances McSherry, M.A., Michael T. Fallon, D.V.M., Ph.D., Austin Frakt, Ph.D., Steven Pizer, Ph.D., Kathryn M. Magruder, M.P.H., Ph.D., Shirley Groer, Ph.D., Patricia A. Dorn, Ph.D., Grant D. Huang, M.P.H., Ph.D., and Eileen M. Stock, Ph.D. [email protected]Authors Info & Affiliations
Publication: Psychiatric Services
Volume 74, Number 8
https://doi.org/10.1176/appi.ps.20220138
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Abstract

Objective:

This work aimed to assess the therapeutic and economic benefits of service dogs versus emotional support dogs for veterans with posttraumatic stress disorder (PTSD).

Methods:

Veterans with PTSD (N=227) participating in a multicenter trial were randomly assigned to receive a service or emotional support dog; 181 veterans received a dog and were followed up for 18 months. Primary outcomes included overall functioning (assessed with World Health Organization Disability Assessment Scale II [WHODAS 2.0]) and quality of life (Veterans RAND 12-Item Health Survey [VR-12]). Secondary outcomes included PTSD symptoms (PTSD Checklist for DSM-5), suicidal ideation, depression, sleep quality, health care costs and utilization, medication adherence, employment, and productivity.

Results:

Participants paired with a dog had a mean±SD age of 50.6±13.6 years (range 22–79), and most were male (80%), White (66%), and non-Hispanic (91%). Adjusted linear mixed repeated-measures models indicated no difference between the two groups on WHODAS 2.0 or VR-12 scores. Participants with service dogs had a 3.7-point greater reduction in PTSD symptoms versus participants with emotional support dogs (p=0.036). No reduced health care utilization or cost was associated with receiving a service dog. Veterans with service dogs had an increase of 10 percentage points in antidepressant adherence compared with those with emotional support dogs (p<0.01).

Conclusions:

Both groups appeared to benefit from having a service or emotional support dog. No significant differences in improved functioning or quality of life were observed between the groups. Those in the service dog group had a greater reduction in PTSD symptoms and better antidepressant adherence, improvements that should be explored further.

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Supplementary Material

File (appi.ps.20220138.ds001.pdf)

Information & Authors

Information

Published In

Go to Psychiatric Services
Go to Psychiatric Services
Psychiatric Services
Volume 74 • Number 8 • August 01, 2023
Pages: 790 - 800
PubMed: 36718602

History

Received: 8 March 2022
Revision received: 12 July 2022
Revision received: 21 September 2022
Accepted: 8 November 2022
Published online: 31 January 2023
Published in print: August 01, 2023

Keywords

  1. Posttraumatic stress disorder
  2. Service dogs
  3. Emotional support dogs
  4. Suicidality
  5. Suicide and self-destructive behavior
  6. Veterans’ issues

Authors

Affiliations

Joan T. Richerson, M.S., D.V.M.
U.S. Department of Veterans Affairs (VA) Tennessee Valley Health Care System, Nashville (Richerson); VA Health Economics Resource Center, Palo Alto Health Care System, Menlo Park, California (Wagner, Illarmo); Center for Access Delivery Research and Evaluation, VA Iowa City Healthcare System, and Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City (Abrams); Atlanta VA Medical Center, Atlanta (Skelton, Fallon); Perry Point/Baltimore Coordinating Center, Cooperative Studies Program, Office of Research and Development, VA, Perry Point, Maryland (Biswas, McSherry, Stock); Partnered Evidence-Based Policy Resource Center, Research and Development, VA Boston Healthcare System, and Department of Health Law, Policy and Management, School of Public Health, Boston University, Boston (Frakt, Pizer); Department of Psychiatry and Behavioral Sciences, Military Sciences Division, and Department of Public Health Sciences, Division of Epidemiology, Medical University of South Carolina, Charleston (Magruder); VA Office of Research and Development, Washington, D.C. (Groer, Dorn, Huang).
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Todd H. Wagner, Ph.D.
U.S. Department of Veterans Affairs (VA) Tennessee Valley Health Care System, Nashville (Richerson); VA Health Economics Resource Center, Palo Alto Health Care System, Menlo Park, California (Wagner, Illarmo); Center for Access Delivery Research and Evaluation, VA Iowa City Healthcare System, and Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City (Abrams); Atlanta VA Medical Center, Atlanta (Skelton, Fallon); Perry Point/Baltimore Coordinating Center, Cooperative Studies Program, Office of Research and Development, VA, Perry Point, Maryland (Biswas, McSherry, Stock); Partnered Evidence-Based Policy Resource Center, Research and Development, VA Boston Healthcare System, and Department of Health Law, Policy and Management, School of Public Health, Boston University, Boston (Frakt, Pizer); Department of Psychiatry and Behavioral Sciences, Military Sciences Division, and Department of Public Health Sciences, Division of Epidemiology, Medical University of South Carolina, Charleston (Magruder); VA Office of Research and Development, Washington, D.C. (Groer, Dorn, Huang).
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Thad Abrams, M.D.
U.S. Department of Veterans Affairs (VA) Tennessee Valley Health Care System, Nashville (Richerson); VA Health Economics Resource Center, Palo Alto Health Care System, Menlo Park, California (Wagner, Illarmo); Center for Access Delivery Research and Evaluation, VA Iowa City Healthcare System, and Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City (Abrams); Atlanta VA Medical Center, Atlanta (Skelton, Fallon); Perry Point/Baltimore Coordinating Center, Cooperative Studies Program, Office of Research and Development, VA, Perry Point, Maryland (Biswas, McSherry, Stock); Partnered Evidence-Based Policy Resource Center, Research and Development, VA Boston Healthcare System, and Department of Health Law, Policy and Management, School of Public Health, Boston University, Boston (Frakt, Pizer); Department of Psychiatry and Behavioral Sciences, Military Sciences Division, and Department of Public Health Sciences, Division of Epidemiology, Medical University of South Carolina, Charleston (Magruder); VA Office of Research and Development, Washington, D.C. (Groer, Dorn, Huang).
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Kelly Skelton, M.D., Ph.D.
U.S. Department of Veterans Affairs (VA) Tennessee Valley Health Care System, Nashville (Richerson); VA Health Economics Resource Center, Palo Alto Health Care System, Menlo Park, California (Wagner, Illarmo); Center for Access Delivery Research and Evaluation, VA Iowa City Healthcare System, and Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City (Abrams); Atlanta VA Medical Center, Atlanta (Skelton, Fallon); Perry Point/Baltimore Coordinating Center, Cooperative Studies Program, Office of Research and Development, VA, Perry Point, Maryland (Biswas, McSherry, Stock); Partnered Evidence-Based Policy Resource Center, Research and Development, VA Boston Healthcare System, and Department of Health Law, Policy and Management, School of Public Health, Boston University, Boston (Frakt, Pizer); Department of Psychiatry and Behavioral Sciences, Military Sciences Division, and Department of Public Health Sciences, Division of Epidemiology, Medical University of South Carolina, Charleston (Magruder); VA Office of Research and Development, Washington, D.C. (Groer, Dorn, Huang).
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Kousick Biswas, Ph.D.
U.S. Department of Veterans Affairs (VA) Tennessee Valley Health Care System, Nashville (Richerson); VA Health Economics Resource Center, Palo Alto Health Care System, Menlo Park, California (Wagner, Illarmo); Center for Access Delivery Research and Evaluation, VA Iowa City Healthcare System, and Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City (Abrams); Atlanta VA Medical Center, Atlanta (Skelton, Fallon); Perry Point/Baltimore Coordinating Center, Cooperative Studies Program, Office of Research and Development, VA, Perry Point, Maryland (Biswas, McSherry, Stock); Partnered Evidence-Based Policy Resource Center, Research and Development, VA Boston Healthcare System, and Department of Health Law, Policy and Management, School of Public Health, Boston University, Boston (Frakt, Pizer); Department of Psychiatry and Behavioral Sciences, Military Sciences Division, and Department of Public Health Sciences, Division of Epidemiology, Medical University of South Carolina, Charleston (Magruder); VA Office of Research and Development, Washington, D.C. (Groer, Dorn, Huang).
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Samantha Illarmo, M.P.H.
U.S. Department of Veterans Affairs (VA) Tennessee Valley Health Care System, Nashville (Richerson); VA Health Economics Resource Center, Palo Alto Health Care System, Menlo Park, California (Wagner, Illarmo); Center for Access Delivery Research and Evaluation, VA Iowa City Healthcare System, and Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City (Abrams); Atlanta VA Medical Center, Atlanta (Skelton, Fallon); Perry Point/Baltimore Coordinating Center, Cooperative Studies Program, Office of Research and Development, VA, Perry Point, Maryland (Biswas, McSherry, Stock); Partnered Evidence-Based Policy Resource Center, Research and Development, VA Boston Healthcare System, and Department of Health Law, Policy and Management, School of Public Health, Boston University, Boston (Frakt, Pizer); Department of Psychiatry and Behavioral Sciences, Military Sciences Division, and Department of Public Health Sciences, Division of Epidemiology, Medical University of South Carolina, Charleston (Magruder); VA Office of Research and Development, Washington, D.C. (Groer, Dorn, Huang).
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Frances McSherry, M.A.
U.S. Department of Veterans Affairs (VA) Tennessee Valley Health Care System, Nashville (Richerson); VA Health Economics Resource Center, Palo Alto Health Care System, Menlo Park, California (Wagner, Illarmo); Center for Access Delivery Research and Evaluation, VA Iowa City Healthcare System, and Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City (Abrams); Atlanta VA Medical Center, Atlanta (Skelton, Fallon); Perry Point/Baltimore Coordinating Center, Cooperative Studies Program, Office of Research and Development, VA, Perry Point, Maryland (Biswas, McSherry, Stock); Partnered Evidence-Based Policy Resource Center, Research and Development, VA Boston Healthcare System, and Department of Health Law, Policy and Management, School of Public Health, Boston University, Boston (Frakt, Pizer); Department of Psychiatry and Behavioral Sciences, Military Sciences Division, and Department of Public Health Sciences, Division of Epidemiology, Medical University of South Carolina, Charleston (Magruder); VA Office of Research and Development, Washington, D.C. (Groer, Dorn, Huang).
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Michael T. Fallon, D.V.M., Ph.D.
U.S. Department of Veterans Affairs (VA) Tennessee Valley Health Care System, Nashville (Richerson); VA Health Economics Resource Center, Palo Alto Health Care System, Menlo Park, California (Wagner, Illarmo); Center for Access Delivery Research and Evaluation, VA Iowa City Healthcare System, and Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City (Abrams); Atlanta VA Medical Center, Atlanta (Skelton, Fallon); Perry Point/Baltimore Coordinating Center, Cooperative Studies Program, Office of Research and Development, VA, Perry Point, Maryland (Biswas, McSherry, Stock); Partnered Evidence-Based Policy Resource Center, Research and Development, VA Boston Healthcare System, and Department of Health Law, Policy and Management, School of Public Health, Boston University, Boston (Frakt, Pizer); Department of Psychiatry and Behavioral Sciences, Military Sciences Division, and Department of Public Health Sciences, Division of Epidemiology, Medical University of South Carolina, Charleston (Magruder); VA Office of Research and Development, Washington, D.C. (Groer, Dorn, Huang).
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Austin Frakt, Ph.D.
U.S. Department of Veterans Affairs (VA) Tennessee Valley Health Care System, Nashville (Richerson); VA Health Economics Resource Center, Palo Alto Health Care System, Menlo Park, California (Wagner, Illarmo); Center for Access Delivery Research and Evaluation, VA Iowa City Healthcare System, and Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City (Abrams); Atlanta VA Medical Center, Atlanta (Skelton, Fallon); Perry Point/Baltimore Coordinating Center, Cooperative Studies Program, Office of Research and Development, VA, Perry Point, Maryland (Biswas, McSherry, Stock); Partnered Evidence-Based Policy Resource Center, Research and Development, VA Boston Healthcare System, and Department of Health Law, Policy and Management, School of Public Health, Boston University, Boston (Frakt, Pizer); Department of Psychiatry and Behavioral Sciences, Military Sciences Division, and Department of Public Health Sciences, Division of Epidemiology, Medical University of South Carolina, Charleston (Magruder); VA Office of Research and Development, Washington, D.C. (Groer, Dorn, Huang).
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Steven Pizer, Ph.D.
U.S. Department of Veterans Affairs (VA) Tennessee Valley Health Care System, Nashville (Richerson); VA Health Economics Resource Center, Palo Alto Health Care System, Menlo Park, California (Wagner, Illarmo); Center for Access Delivery Research and Evaluation, VA Iowa City Healthcare System, and Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City (Abrams); Atlanta VA Medical Center, Atlanta (Skelton, Fallon); Perry Point/Baltimore Coordinating Center, Cooperative Studies Program, Office of Research and Development, VA, Perry Point, Maryland (Biswas, McSherry, Stock); Partnered Evidence-Based Policy Resource Center, Research and Development, VA Boston Healthcare System, and Department of Health Law, Policy and Management, School of Public Health, Boston University, Boston (Frakt, Pizer); Department of Psychiatry and Behavioral Sciences, Military Sciences Division, and Department of Public Health Sciences, Division of Epidemiology, Medical University of South Carolina, Charleston (Magruder); VA Office of Research and Development, Washington, D.C. (Groer, Dorn, Huang).
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Kathryn M. Magruder, M.P.H., Ph.D.
U.S. Department of Veterans Affairs (VA) Tennessee Valley Health Care System, Nashville (Richerson); VA Health Economics Resource Center, Palo Alto Health Care System, Menlo Park, California (Wagner, Illarmo); Center for Access Delivery Research and Evaluation, VA Iowa City Healthcare System, and Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City (Abrams); Atlanta VA Medical Center, Atlanta (Skelton, Fallon); Perry Point/Baltimore Coordinating Center, Cooperative Studies Program, Office of Research and Development, VA, Perry Point, Maryland (Biswas, McSherry, Stock); Partnered Evidence-Based Policy Resource Center, Research and Development, VA Boston Healthcare System, and Department of Health Law, Policy and Management, School of Public Health, Boston University, Boston (Frakt, Pizer); Department of Psychiatry and Behavioral Sciences, Military Sciences Division, and Department of Public Health Sciences, Division of Epidemiology, Medical University of South Carolina, Charleston (Magruder); VA Office of Research and Development, Washington, D.C. (Groer, Dorn, Huang).
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Shirley Groer, Ph.D.
U.S. Department of Veterans Affairs (VA) Tennessee Valley Health Care System, Nashville (Richerson); VA Health Economics Resource Center, Palo Alto Health Care System, Menlo Park, California (Wagner, Illarmo); Center for Access Delivery Research and Evaluation, VA Iowa City Healthcare System, and Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City (Abrams); Atlanta VA Medical Center, Atlanta (Skelton, Fallon); Perry Point/Baltimore Coordinating Center, Cooperative Studies Program, Office of Research and Development, VA, Perry Point, Maryland (Biswas, McSherry, Stock); Partnered Evidence-Based Policy Resource Center, Research and Development, VA Boston Healthcare System, and Department of Health Law, Policy and Management, School of Public Health, Boston University, Boston (Frakt, Pizer); Department of Psychiatry and Behavioral Sciences, Military Sciences Division, and Department of Public Health Sciences, Division of Epidemiology, Medical University of South Carolina, Charleston (Magruder); VA Office of Research and Development, Washington, D.C. (Groer, Dorn, Huang).
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Patricia A. Dorn, Ph.D.
U.S. Department of Veterans Affairs (VA) Tennessee Valley Health Care System, Nashville (Richerson); VA Health Economics Resource Center, Palo Alto Health Care System, Menlo Park, California (Wagner, Illarmo); Center for Access Delivery Research and Evaluation, VA Iowa City Healthcare System, and Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City (Abrams); Atlanta VA Medical Center, Atlanta (Skelton, Fallon); Perry Point/Baltimore Coordinating Center, Cooperative Studies Program, Office of Research and Development, VA, Perry Point, Maryland (Biswas, McSherry, Stock); Partnered Evidence-Based Policy Resource Center, Research and Development, VA Boston Healthcare System, and Department of Health Law, Policy and Management, School of Public Health, Boston University, Boston (Frakt, Pizer); Department of Psychiatry and Behavioral Sciences, Military Sciences Division, and Department of Public Health Sciences, Division of Epidemiology, Medical University of South Carolina, Charleston (Magruder); VA Office of Research and Development, Washington, D.C. (Groer, Dorn, Huang).
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Grant D. Huang, M.P.H., Ph.D.
U.S. Department of Veterans Affairs (VA) Tennessee Valley Health Care System, Nashville (Richerson); VA Health Economics Resource Center, Palo Alto Health Care System, Menlo Park, California (Wagner, Illarmo); Center for Access Delivery Research and Evaluation, VA Iowa City Healthcare System, and Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City (Abrams); Atlanta VA Medical Center, Atlanta (Skelton, Fallon); Perry Point/Baltimore Coordinating Center, Cooperative Studies Program, Office of Research and Development, VA, Perry Point, Maryland (Biswas, McSherry, Stock); Partnered Evidence-Based Policy Resource Center, Research and Development, VA Boston Healthcare System, and Department of Health Law, Policy and Management, School of Public Health, Boston University, Boston (Frakt, Pizer); Department of Psychiatry and Behavioral Sciences, Military Sciences Division, and Department of Public Health Sciences, Division of Epidemiology, Medical University of South Carolina, Charleston (Magruder); VA Office of Research and Development, Washington, D.C. (Groer, Dorn, Huang).
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Eileen M. Stock, Ph.D. [email protected]
U.S. Department of Veterans Affairs (VA) Tennessee Valley Health Care System, Nashville (Richerson); VA Health Economics Resource Center, Palo Alto Health Care System, Menlo Park, California (Wagner, Illarmo); Center for Access Delivery Research and Evaluation, VA Iowa City Healthcare System, and Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City (Abrams); Atlanta VA Medical Center, Atlanta (Skelton, Fallon); Perry Point/Baltimore Coordinating Center, Cooperative Studies Program, Office of Research and Development, VA, Perry Point, Maryland (Biswas, McSherry, Stock); Partnered Evidence-Based Policy Resource Center, Research and Development, VA Boston Healthcare System, and Department of Health Law, Policy and Management, School of Public Health, Boston University, Boston (Frakt, Pizer); Department of Psychiatry and Behavioral Sciences, Military Sciences Division, and Department of Public Health Sciences, Division of Epidemiology, Medical University of South Carolina, Charleston (Magruder); VA Office of Research and Development, Washington, D.C. (Groer, Dorn, Huang).
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Notes

Send correspondence to Dr. Stock ([email protected]).
An earlier version of this work was presented to a review committee established by the National Academies of Sciences, Engineering, and Medicine at virtual meetings held April 2, 2020, and January 15, 2021.

Author Contributions

Drs. Richerson and Wagner are coequal first authors. Drs. Huang and Stock are cosenior authors.

Funding Information

This work was supported by the Office of Research and Development, VA.The views in this article represent the opinions of the authors and not necessarily those of the VA or the U.S. government. The Veterans Health Administration and Office of Research and Development had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; or decision to submit the manuscript for publication, other than sponsoring the trial and providing general guidance and policies for conduct of the research as detailed in the study protocol and statistical analysis plan.

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