Table 2. Annual mean SCR scores by radiotherapy.

SCR: standardized claim-data ratio; N.A.: Not applicable

Radiotherapy	2018, mean ± SD	2019, mean ± SD	2020, mean ± SD	2021, mean ± SD
Lung cancer	101.2±23.5	101.8±23.9	101.7±22.8	100.4±23.3
Metastatic lung cancer	N.A.	N.A.	N.A.	103.0±36.7
Gastric cancer	100.7±34.4	102.1±37.9	103.4±39.8	99.0±34.8
Colorectal cancer	100.9±26.0	100.8±27.6	99.5±28.2	102.3±28.2
Hepatocellular carcinoma	99.9±27.2	101.8±31.9	101.9±31.9	107.2±50.4
Metastatic liver cancer	N.A.	N.A.	N.A.	102.7±40.8
Breast cancer	107.1±53.1	105.7±58.0	107.2±28.1	103.3±50.0