The purpose of this study is to determine whether information regarding GA and GA-driven interventions improves outcomes in older cancer patients receiving first-line or second-line chemotherapy by comparing rates of chemotherapy toxicity, hospitalizations, dose delays and early termination of treatment in patients with and without GA-driven interventions. The investigators will identify information that will be useful based on questionnaire responses and blood tests. These results will be used to better understand which recommendations and interventions will benefit older cancer patients. It is our hope that these tools, which are well-established at identifying areas of risk, will provide meaningful opportunities for intervention to promote your safety during cancer management. The investigators will be able to use this information to teach others on how to best care for adults aged 70 and older with cancer.