Question

Researchers were interested in the relationship between the consumption of diet soda and blood pressure. They interviewed 2,000 people—1,000 people who drank 1 or more diet sodas per day and 1,000 people who did not drink diet soda. Among those that drank diet soda, 90 people had high blood pressure; in the non-soda drinking group, there were 10 cases of high blood pressure.

Based on this, what is the prevalence ratio for high blood pressure comparing diet soda drinkers to non-diet soda drinkers?

Answer 1

The prevalence ratio for high blood pressure between diet soda drinkers and non-diet soda drinkers is 9, indicating that diet soda drinkers have a 9 times higher prevalence of high blood pressure.

Step-by-step explanation:

The prevalence ratio for high blood pressure comparing diet soda drinkers to non-diet soda drinkers can be calculated using the data provided. In the diet soda drinkers' group, the prevalence of high blood pressure is 90 out of 1,000, or 9%. Conversely, in the non-soda drinking group, the prevalence is 10 out of 1,000, or 1%. The prevalence ratio is the ratio of these two prevalences:

Prevalence in diet soda drinkers ÷ Prevalence in non-drinkers = 9% ÷ 1% = 9

This means diet soda drinkers have a 9 times higher prevalence of high blood pressure compared to non-diet soda drinkers, assuming no other factors influence the condition.