Band 6+: The pie charts below show the leading causes of insomnia, in percentages, as reported by two groups of people. The people in group A were between the ages of 20 and 40 and those in group B were between 60 and 80.

The presented illustration of the pie chart demonstrates the affects of insomnia in two groups of population, such as Group A and Group B. The ages of people in group A, from 20 to 40 old, and in Group B between 60 and 80. Units are measured in percentages.

Overall, it is clear that the stress and drinks with caffeine mainly causes of insomnia between the ages of 20 and 40, whereas medications and health in the ages of 60 to 80.

In group A, stress that is biggest portion of six causes accounted 40% of whole pie chart, while affects of insomnia in health only comprises 5%. In contrast, causes in health in Group B measured at 31%, and level of stress in this group experienced only 8% of the chart.

In terms of depression and environmental factors in group A, both indicated at 10%, respectively; and in group B, the level of depression increased by 6% to 16% and enfironmental facts on this age remain unchanged.