CSF3 and Decreased total leukocyte count: The median ages (95%CI) of all patients, patients with leukopenia, patients with G-CSF administration, and patients without G-CSF administration but with leukopenia were 58.0 (55.5–56.1), 57.0 (51.8–56.4), 60.0 (52.4–61.8), and 53.0 (50.5–55.9) years, respectively.