Table 1.

Training implementation of Mental Health First Aid across the study using the TIDeiR checklist.

Item	Training 1	Training 2	Training 3
Brief name of intervention	Standard adult MHFA	Standard adult MHFA	Standard adult MHFA
Why – rationale for intervention	Identified gap in education.	Identified gap in education.	Identified gap in education.
What – materials used in the intervention	MHFA manual provided to all participants. MHFA training is 12 hours and content includes: Introduction to mental health in Ireland, Depression, Anxiety, Psychosis and Substance Misuse.	Same as training 1.	Same as training 1.
Procedures – procedures, activities or processes	Standard MHFA: All sessions involve group activities, case studies, video scenarios and some sessions include lived experienced perspectives through video.	Standard MHFA – Same as training 1. Additional Simulated practice is included in this training which is not provided in standard MHFA (5 hours); Simulation included assembling in small groups, reading a scenario and practising being the MHFAider or patient and practicing three different scenarios in this small group setting.	Standard MHFA – Same as training 1. Additional Simulation – Same as training 2.
Who – instructors expertise, background and any specific training given	Delivered by two female, similar age instructors who are licensed MHFA instructors.	Delivered by two embedded MHFA instructors at RCSI. Both female and similar age. One works as a social worker with student welfare team at the university and the other is a former paramedic fire fighter working as a teacher practitioner at the university.	Same as training 2.
How – describe modes of delivery	In person at St John of God University training room in group of 20 participants.	In person at RCSI Dublin campus in group of 20 participants.	In person at RCSI Dublin Campus in group of 20 participants.
Where – type of location where intervention occurred	External location.	On campus.	On campus.
Modifications	The training was delivered over 2 days as per standard adult MHFA.	The training was delivered in 3-hour sessions over 4 days. A simulated practice occurred on day 5. As per the student choice elective requirements, attendance at all 5 days was mandatory, and a 500 word reflective assignment was required to pass the module. This was not graded by anyone involved in this study.	Same as training 2.
How well fidelity to training was maintained	Both instructors are licensed instructors who delivered the training as per MHFA Ireland guidelines.	Both instructors are licensed instructors who delivered the training as per MHFA Ireland guidelines. All students were aware that the day 5 was not part of the standard training,	Same as training 2.