Number of older adults hospitalized during chemotherapy by presence of number of identified risk factors. Risk factors included ≥ 3 self-reported comorbid conditions, albumin < 3.5 g/dL, creatinine clearance ≤ 60 mL/min, GI cancer, polypharmacy (≥ 5 medications), requiring assistance with dressing or bathing, and having someone available to take them to the doctor most or all of the time.