Character of research participants
| No | Sex | PGY | Type of institution | Position | Participation |
| N1 | F | 15 | Community hospital | Staff | 2016 |
| N2 | M | 4 | Nursing home | Staff | 2017 |
| N3 | M | 20 | Self-defense forces | Staff | 2016 |
| N4 | F | 10 | University | Graduate student | 2016 |
| N5 | M | 17 | University | Lecturer | 2016 |
| D1 | M | 15 | Self-defense forces hospital | Staff | 2016 |
| D2 | M | 9 | Self-defense forces | Staff | 2016 |
| D3 | M | 34 | University hospital | Professor | 2016 |
| D4 | M | 23 | Community hospital | Manager | 2017 |
| D5 | M | 11 | Self-defense forces hospital | Staff | 2016 |
| P1 | M | 16 | Self-defense forces hospital | Manager | 2016 |
| P2 | M | 21 | University hospital assistant | Professor | 2017 |
| P3 | M | 13 | Community hospital | Staff | 2017 |
| P4 | F | 13 | Community hospital | Staff | 2016 |
| P5 | M | 14 | Community hospital | Staff | 2016 |
| P6 | M | 19 | University hospital | Lecturer | 2016, 2017 |
| P7 | M | 9 | Self-defense forces hospital | Staff | 2016 |
| P8 | M | 8 | University hospital | Staff | 2017 |
| P9 | M | 4 | University hospital | Resident | 2017 |
| P10 | M | 30 | University hospital | Assistant professor | 2017 |
D, dentist; N, nurse; P, physician (doctor); PGY, postgraduate year.