Researchers recorded the annual rate of new cases of coronary heart disease in groups of adults with different eating habits.
| Group of adults | New cases of coronary heart disease per 100 000 adults per year |
|---|---|
| Rarely eat foods high in saturated fat | 18 |
| Eat foods high in saturated fat 1 to 2 days a week | 54 |
| Eat foods high in saturated fat 3 to 4 days a week | 108 |
| Eat foods high in saturated fat every day | 216 |
Which statement about the rates of new cases in the table is correct?
The rate for adults who rarely eat these foods is one-third of the rate for those eating them 3 to 4 days a week
The rate for adults eating these foods 1 to 2 days a week is half the rate for those eating them 3 to 4 days a week
The rate for adults eating these foods 1 to 2 days a week is one-quarter of the rate for those eating them 3 to 4 days a week
The rate for adults eating these foods every day is three times the rate for those eating them 3 to 4 days a week
304 exam-style questions on AQA GCSE Biology 2.2 Animal tissues, organs and organ systems, covering 2.2.1 The human digestive system, 2.2.2 The heart and blood vessels, 2.2.3 Blood, 2.2.4 Coronary heart disease: a non-communicable disease, 2.2.5 Health issues, 2.2.6 The effect of lifestyle on some non-communicable diseases, and 2.2.7 Cancer. Each one has a worked solution and a mark scheme showing where the marks go.