Table 2 Summary of instrument of studies

Category Instrument
Attitude Attitude assessment[18], Frommelt Attitudes Toward Care of the Dying (FATCOD)[13]
Compassion Compassion in End-of-Life care (EOLC)[20]
Communication confidence Confidence to perform in communication[10]
Communication skill Palliative care communication[16], palliative communication survey instrument[22], skill in communicating[10]
Competence Palliative care practice[12]
Knowledge End of life care knowledge (education questionnaire)[13], ELNEC Knowledge Assessment Test (ELNEC-KAT)[21], End-of-Life Professional Caregiver Survey (EPCS)[19], geriatric palliative care knowledge[14], knowledge assessment questionnaire (about EOLC for hepatic patients)[11], management at the End-of-Life[15], palliative care knowledge[9], palliative care knowledge[18], palliative care quiz for nursing[20]
Practice EOLC practice[17], geriatric palliative care practices[14], nurses performance checklist[11], palliative care practice[18], palliative care practice[9], the Program in Palliative Care Education and Practice Questionnaire-German Revised Version (PCEP-GR)[21]
Self-Efficacy Palliative care self-efficacy scale[23], self-efficacy in EOLC [20]