1INTRODUCTIONThe coexistence of multiple chronic conditions or comorbidity is common in older age groups including after cancer. In Australia, nearly 90 percent of cancer patients aged 45 years and over have at least one other chronic disease and approximately one‐third have three or more. A number of studies have assessed the prevalence of comorbidities in cancer patients. Some studies have examined the patterns of individual comorbidities for different types of cancer, while others have used comorbidity indices to measure the overall burden of comorbidities. However, the ability to make comparisons between studies may be limited by the differences in the demographic characteristics of study populations (e.g. age, ethnicity and socioeconomic status), types of individual comorbidities included in the analysis, the nature of the data sources (e.g. administrative hospital data vs. self‐reported) as well as the time points when comorbidities were evaluated (e.g. prior cancer diagnosis vs. ever‐experienced and after diagnosis).Comorbidity has been shown to influence treatment choices, adherence to treatment, toxicity of cancer medicines, health outcomes and use of healthcare services in cancer patients. The presence of concomitant chronic conditions may influence treatment decisions at the time of cancer diagnosis. This may be due to concerns that some patients
Asia-Pacific Journal of Clinical Oncology – Wiley
Published: Jan 1, 2018
Keywords: ; ; ; ;
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