Epidemiology

Question 1

epidemiology

Answer 1

study of populations in order to determine frequency and distribution of disease
allows diseases to be monitored, investigate risk factors , create preventative programmes , health service planning

Question 2

prevalence

Answer 2

all individuals affected by disease at a particular Point/Period in time
expressed as a percentage - number affected / total population x100
good for chronic conditions e.g diabetes

Question 3

incidence

Answer 3

number of new cases over a period of time , good for short term curable diseases e.g common cold

Question 4

systematic sample

Answer 4

sample subjects are systematically picked e.g in a list of 100 people every 10th person will be picked

Question 5

stratified sample

Answer 5

population is divided into sub groups so that all are represented
subjects are then selected from each of these groups

Question 6

cluster sample

Answer 6

population divided into groups then random groups are selected

Question 7

multi stage sampling

Answer 7

combines various sampling techniques