“…The NHI program covers not only Western medical services but also ambulatory care in TCM. All claims data from the NHI program are collected in the National Health Insurance Research Database (NHIRD), and researchers can use these datasets to evaluate the utilization of TCM for various diseases such as allergies [ 14 , 15 ], musculoskeletal diseases [ 16 – 18 ], metabolic disorders [ 19 , 20 ], gynecologic diseases [ 21 ], pediatric diseases [ 2 ], geriatric disorders [ 22 ] and cancer [ 23 , 24 ]. De-identified demographic characteristics (e.g., sex, date of birth, occupation and place of residence) and clinical information (e.g., diagnosis, management and treatment) are also provided in the database.…”