| LSIS-6 | Six-item loneliness and social isolation scale |
| COVID-19 | Coronavirus disease 2019 |
| NMHSK | National Mental Health Survey of Korea |
| OLS | Ordinary least squares |
| LSIS-6 | Six-item loneliness and social isolation scale |
| COVID-19 | Coronavirus disease 2019 |
| NMHSK | National Mental Health Survey of Korea |
| OLS | Ordinary least squares |