Standardisation

Question 1

What is standardisation?

Answer 1

The method for allowing for differences in characteristics such as age, sex etc in the population.

Question 2

Why is standardisation important?

Answer 2

This is important as rates of disease are strongly dependent on factors so this removes bias such as differences in population or observer variation

Question 3

What is direct standardisation?

Answer 3

Rates from each population studies applied to standard population giving the adjusted mortality rate

Question 4

What is indirect standardisation?

Answer 4

Rates from a standard population applied to each population giving the standardised mortality rates

Question 5

Why is is good to study a larger population?

Answer 5

Selecting a large population sample means the results are more generalisable to a wider population

Question 6

Consequence of poorly recorded measures

Answer 6

This gives a reduced association between exposure and outcome.
If only some measures are recorded poorly, this may introduce systematic errors and bias.