| 1 | Decision-maker (26) | Family expression of agreement, family witness, terminal patient, decision-making capacity, underage person, unconscious patient, foreigner | 587 | (24.02%) |
| 2 | Legal documents (18) | Advance Statement on LST, LST Plan Document, Preservation of Records, LST Data System, power of document, voice recording | 545 | (22.30%) |
| 3 | Decision-making process (22) | Documenting implementation report, certificate of end of life process diagnosis, withdrawing, withholding, revocation | 459 | (18.78%) |
| 4 | Healthcare institutes/medical practice (24) | Artificial ventilator, fee, physician-in-charge, cardiopulmonary resuscitation | 313 | (12.81%) |
| 5 | Certificate document (23) | Family relations certificate, resident registration number | 253 | (10.35%) |
| 6 | Other healthcare institutions (7) | Transfer, facilities without institutional ethics committee | 114 | (4.66%) |
| 7 | Institutional Ethics Committee (4) | Institutional ethics committee | 104 | (4.26%) |
| 8 | Related laws (10) | Punishment | 58 | (2.37%) |
| 9 | Advance statement registration agency (3) | - | 6 | (0.25%) |
| 10 | Brain death (2) | - | 5 | (0.2%) |