COVID-19 Case Surge and Telemedicine Utilization in a Tertiary Hospital in Korea

Background: Faced with the coronavirus disease 2019 (COVID-19) pandemic, Korea has allowed telemedicine use for a limited time. This study examined whether the surge in COVID-19 cases led to increased telemedicine use and the associated factors. Methods: Data from the electronic medical records of 929,753 outpatient episodes between March 4 and September 4, 2020, in a tertiary hospital in Korea were used. A comparison group was chosen by matching, adjusting for age and sex because only a small portion (1.0%) of the sample used telemedicine. The final sample comprised 57,972 episodes. Multivariable logistic regression analyses were performed to examine the association of independent variables with the dichotomous dependent variable (i.e., telemedicine visit/in-person visit). Results: The surge in confirmed COVID-19 cases led to significantly increased telemedicine use (101–300 new cases odds ratio OR: 3.00; 301–500 new cases OR: 5.82; and ≥501 new cases OR: 42.18; all p < 0.0001). Telemedicine use was also statistically associated with sex (female patients OR: 2.08), age ˃19 years, distance from the hospital (Incheon, Gyeonggi, region, OR: 1.30; and other regions, OR: 4.33), and the number of days from diagnosis (3–6 months OR: 1.21; 6–12 months OR: 1.56; 12–36 months OR: 1.98; and ≥36 months OR: 2.49). Medical Aid patients (OR: 0.83) were less likely to use telemedicine than those with National Health Insurance. Conclusions: Telemedicine can be effective in delivering health services during an outbreak. Policymakers and health care organizations are encouraged to use the results of this study to tailor telemedicine to meet the needs of patients.