Final answer:
A significant percentage of the elderly population has at least one chronic medical condition.
Step-by-step explanation:
The percentage of the elderly who report having at least one chronic medical condition is not stated explicitly in the given information. However, the information does mention the most frequently reported health issues for people over sixty-five years old, which include arthritis (50 percent), hypertension (38 percent), heart disease (32 percent), and cancer (22 percent). These statistics indicate that a significant percentage of the elderly population has at least one chronic medical condition.