Cancer and Aging Research Group (CARG) Chemotherapy Toxicity Risk Scores in Older Adults With Cancer in China

Inclusion Criteria: * Age≥ 70 years old * Confirmed diagnosis of solid tumor (any stage) * ECOG-PS score 0-2 points * Admission to the hospital for a new chemotherapy regimen (initial or change) * Patients need to have the ability to read and write, or communicate in Chinese * The patient must have the ability to give informed consent. Exclusion Criteria: * Patients who are on immunotherapy and/or targeted therapy only * Patients with hematologic malignancy * Patients with severe infections (sepsis, severe respiratory tract infections, severe urinary tract infections, severe abdominal infections, etc.). * Patients with severe heart, liver, and kidney dysfunction or failure