1.2 - Who is at risk of CVD?

Question 1

Define risk.

Answer 1

probability of occurence of an unwanted event or outcome

Question 2

Define probability.

Answer 2

how likely a risk is going to occur.

Question 3

What is a correlation?

Answer 3

where 2 events happen at same time, but one event doen’t necessarily cause the other

Question 4

What is causation?

Answer 4

direct link between one event happening & another event happening

Question 5

What is a null hypothesis?

Answer 5

assumes there is no dffnc bwtn control grp & experiment grp

Question 6

What are the 5 things you need to look out for when evaluation the design of a study? Why?(for each reason)

Answer 6

1. sample size - the greater the no. of people, the more reliable the results
2. variables - more variables have been controlled, the more reliable & valid the results
3. data collection - the less bias in collecting data, the more reliable the results
4. controls - the presence of controls increases validity
5. repetition - if other scientists produce the same results, results = more reliable

Question 7

What are features of a cohort study?

Answer 7

follows a grp of individuals over a long period of time

Question 8

List 4 features of a good study/experiment into risk factors & disease.

Answer 8

1. clear aim
2. representative sample
3. several controlled variables
4. high reproducibility