Chronic pain is often de?ned as pain that occurs constantly and ?ares up frequently, is not caused by cancer, and is experienced at least once a month for a one-year period of time. Many articles have been written about the relation-ship between chronic pain and the age of the patient. In a survey conducted on behalf of the American Chronic Pain Association in 2004, a random cross section of 800 adults who su?er from chronic pain found that 424 of the 800 participants in the survey were above the age of 50. Using the data in the survey, is there substantial evidence (LaTeX: alpha = .05?=.05) that more than half of persons su?ering from chronic pain are over 50 years of age?

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