Medical travel patterns for hepatocellular carcinoma treatment in South Korea: National Health Insurance data from 2013 to 2021

Figure 1 Flowchart of the study population selection based on the National Health Insurance Service data for hepatocellular carcinoma. HCC: Hepatocellular carcinoma; ICD: International Classification of Diseases; NHIS: National Health Insurance Service.

Figure 2 Trends of patients with hepatocellular carcinoma. A: Diagnosed region; B: Treatment region.

Figure 3 Medical travel of patients with hepatocellular carcinoma. A: Out of the region (efflux) for treatment; B: Into the region (influx) for treatment; C: Proportion of patients who traveled out of diagnosed areas; D: Proportion of patients who traveled to different regions for management.

Figure 4  Distribution of healthcare service utilization across regions based on patient residency.