Authors	Year	Country	Study type	Purpose	N	Subject	Method	Interval
Crowe et al.	2017	US	Observational study	Gathering the opinions about service dogs of veterans with a history of Post-Traumatic Stress Disorder (PTSD) and/or traumatic brain injury	N = 9	Veterans with PTSD	Interview and focus group	-
Glintborg& Hansen	2017	Denmark	Case study	How do medical professionals react to the inclusion of a service dog in a PTSD treatment programme	N = 1	Person with PTSD	Interviews	-
Kloep et al.	2017	US	Observational study	Investigate the effects of a new programme for people with PTSD	N = 7 N = 5	Veterans with PTSD	PCL-S, QIDS, PSSS, DAR-5, QOLS	1 month before treatment (baseline), at the start of treatment, each week during treatment (3x), 1 month after treatment, 6 months after treatment
Saunders et al.	2017	US	Study proposal	Difference between provision of service dogs and emotional support dogs to veterans with PTSD	N.A.	Veterans with PTSD	Assigned a service or support dog. WHO-DAS II, VR-12, physical component score, mental component score, PCL-5, PSQI, PHQ-9, DAR, WPAI:GHP, C-SSRS	18 months observation; Check-ups at 1 & 2 weeks, 1 & 2 months; Study appointment at 3, 9, 15 months; Home visit at 6, 12, 18 months
Scotland-Coogan et al.	2017	US	Study proposal	Investigate veterans experiences during a training programme with PTSD Service Dogs and programme effect	N.A.	Veterans with PTSD	-	-
Vincent et al.	2017	Canada	Observational study	Evaluate the effectiveness of PTSD Service Dogs for veterans with PTSD	N = 15	Veterans with PTSD, on a service dog waiting list	PSQI, PCL-M, BDI-II, WHOQOL BREF, LSA	6,3,0 months before receiving a service dog; 3 months after receiving a service dog
Yarborough et al.	2017	US	Observational study	Examining needs related to PTSD, service dogs, and feasibility of data collection	N = 54 N = 24 N = 22	Veterans with PTSD	VR-12, DRRI, BASIS-24, PCL-C, Activity meter, WQOLI, GSS	1 measurement
Krause-Parello	2016	US	Systematic literature review	To examine the current knowledge of canine assistance for veterans diagnosed with PTSD to synthesize current empirical knowledge on the subject	N = 6	Peer reviewed subject specific articles published up to October 2015.	Review	-
Owen	2016	US	Narrative literature review	Describing recent developments in integrating specialty trained dogs in military veterans’ health care	-	Integration of the PTSD Service Dog in existing PTSD treatment programmes	Narrative	-
Furst	2015	US	Case study	Discussing the way in which society treats military veterans with PTSD and how treatment could influence them	−.	Role of society and healthcare in treating those with PTSD	Narrative	-
Weinmeyer	2015	US	Case study	Outline the difficulties surrounding the provision of PTSD Service Dogs to those with PTSD	-	Political struggle surrounding the provision of PTSD Service Dogs	Narrative	-
Gillett & Weldrick	2014	Canada	Study proposal	The use of canine-assisted interventions for veterans diagnosed with PTSD	-N.A.	Military veterans with PTSD	Three levels of analysis: biological, physiological, social. Assessment per level (medical records, assessment tools for mental health, in-depth interviews)	-
Yount et al.	2013	US	Review and case study	Discussing the potential of the PTSD Service Dog in reducing the negative influence of PTSD in military veterans	-	-	Narrative	-
Stern et al.	2013	US	Observational study	Investigate the comforting and supporting effect the presence of an animal (dog) on individuals with PTSD	N = 30	Military veterans with PTSD having benefitted from living with a dog (companion/pet dog)	PCL-M, BDI-II, SF-36, Dog information sheet, Dog relationship questionnaire, Lexington attachment to pets scale	1 measurement
Taylor et al.	2013	Australia	Observational study	Provide insights into the post-war dog–owner relationship experiences of contemporary veterans	N = 19 N = 81	Media accounts of veterans with PTSD and public comments	Triangulated three phase content analysis	-
Finley	2013	US	Narrative literature review	How do authorities on veteran affairs respond to new treatments for veterans with PTSD?	-	PTSD Service Dogs	Review	-
Krol	2012	US	Case study	The history, philosophy, and methodology behind America’s VetDogs program	-	America’s VetDogs program	Review	-
Yount et al.	2012	US	Case study	The history, philosophy, and methodology behind the Warrior Canine Connection (WCC)	-	Warrior Canine Connection	Review	-
Love & Esnayra	2009	US	Study proposal	-	N.A.	Soldiers returning to the Walter Reed Army Medical Center (WRAMC)	Behavioural assessments of general mental health and PTSD symptom manifestations, biological markers associated with anxiety/stress/depression	-