| A1 | Oh et al. (2020) [25] | To investigate the experiences of nurses in a general hospital with an 800-bed size, temporarily closed after a confirmed case of COVID-19 | Isolation/neurology/neurosurgery/nursing care integration/orthopedic/surgical ward, outpatient safety clinic center, screening clinic center, surgical ICU | Phenomenological method/ Colaizzi (1978) | Individual in-depth interviews (face-to-face) | Snowball sampling / 10 nurses | '20.5.–'20.6. |
| A2 | Kim & Cho (2021) [26] | To examine the emotions experienced by Korean clinical nurses during the Coronavirus disease 2019 (COVID-19) pandemic and to understand their essential meaning in depth | Infection control department, medical-surgical/ neurological/psychiatric closed ward, administrative department, ER, hemodialysis room, nursing department, ICU | Phenomenological method/ Colaizzi (1978) | Individual in-depth interviews (face-to-face & video interviews) | Purposive and snowball sampling/ 12 nurses | '20.6.– '20.12. |
| A3 | Oh et al. (2021) [27] | To explore nurses’ working experiences during the pandemic at a Coronavirus Disease 2019 (COVID-19) dedicated hospital in Korea | General ward, ICU | Qualitative content analysis/Elo and Kyngäs (2008) | Focus groups & Individual in-depth interviews (face-to-face) | Purposive sampling/ 20 nurses | '21.3.–'21.6. |
| A4 | Lee & Song (2021) [28] | To develop a situation-specific theory to explain nurses’ experiences of the COVID-19 crisis | Emergency isolation ward, isolation ward, ICU | Grounded Theory method/ Strauss & Corbin (1998) | Individual in-depth interviews (face-to-face) | Purposive and snowball sampling/ 16 nurses | '20.9.–'21.1. |
| A5 | Kim et al. (2022) [29] | To explore the experiences of ward nurses participating in COVID-19 patient care | COVID-19 ward | Phenomenological method/ Colaizzi (1978) | Individual in-depth interviews (face-to-face) | Purposive and snowball sampling/ 12 nurses | '21.5.–'21.6. |
| A6 | Suh & Kim (2022) [30] | To describe and understand the meaning and essence of care experienced by long-term-care-hospital nurses during the COVID-19 pandemic | Long-term care hospitals | Phenomenological method/ Colaizzi (1978) | Individual in-depth interviews (face-to-face & telephone interviews) | Purposive sampling/ 10 nurses | '21.4.–'21.6. |
| A7 | Ji & Lee (2021) [31] | To explore the experiences of new nurses who took care of COVID-19 patients | COVID-19 designated hospitals & designated wards | Phenomenological method/ Colaizzi (1978) | Individual in-depth interviews (face-to-face & online interviews) | Snowball sampling/ 9 nurses | '20.9.–'20.11. |
| A8 | Kim & Kim (2021) [32] | To develop a substantive theory and provide basic data with which to develop intervention programs that can support nurses caring for COVID-19 patients | Nationally designated COVID-19 hospital in the negative pressure ward | Grounded theory/ Corbin & Strauss (2014) | Individual in-depth interviews (face-to-face) | theoretical sampling/ 23 nurses | '20.8.–'20.10. |
| A9 | Lee et al. (2023) [33] | To gain a comprehensive understanding of the experiences of frontline nurses who provided direct care for COVID-19 patients | General ward, infectious ward, ER, ICU | Descriptive qualitative study/ Braun & Clark’ Thematic analysis (2006) | Individual in-depth interviews (Online interviews) | Purposive sampling/ 14 nurses | '20.12.–'21.4. |