Question

5) In a test of roughly 200 men and women, those with moderately high blood pressure (averaging 164/89 mmHg ) scored worse on tests of memory and reaction time than those with normal blood pressure. a) Identify the type of observational study. b) The subjects studied c) The parameter of interest

Answer 1

The study is a cross-sectional study comparing test scores of individuals with moderately high blood pressure to those with normal blood pressure to determine the effect on memory and reaction time.

Step-by-step explanation:

The type of observational study in this case is a cross-sectional study. In a cross-sectional study, data is collected from a group of people at a specific point in time to evaluate the relationship between different variables. In this study, the researchers collected data from roughly 200 men and women and compared the test scores of individuals with moderately high blood pressure (averaging 164/89 mmHg) to those with normal blood pressure.

The subjects studied were men and women with varying levels of blood pressure. The researchers divided them into two groups - those with moderately high blood pressure and those with normal blood pressure. The test scores were then compared between the two groups.

The parameter of interest in this study is the effect of blood pressure on test scores of memory and reaction time. The researchers wanted to determine if individuals with moderately high blood pressure perform worse on these tests compared to those with normal blood pressure.

Answer 2

The observational study is a cross-sectional study focusing on the cognitive functions of around 200 men and women with different blood pressure levels. The subjects are those individuals, and the parameter of interest is the association between blood pressure and memory/reaction time.

Step-by-step explanation:

In the study where individuals with moderately high blood pressure (averaging 164/89 mmHg) scored worse on tests of memory and reaction time compared to those with normal blood pressure:

a) The type of observational study conducted here seems to be a cross-sectional study where a certain population is observed at a single point in time to investigate the association between blood pressure and cognitive functions.

b) The subjects studied are a group of approximately 200 men and women with varying levels of blood pressure.

c) The parameter of interest in this study is the relationship between blood pressure levels and cognitive performance, specifically memory and reaction time.