data collection part 4 of 4

Question 1

what are the 3 types of measurement errors

Answer 1

• inherent variation in the variable- exacerbated when using proxies.
• imperfect measurement equipment/technique.
• same variables arising from the same questions may be biased in different ways depending on the context.

Question 2

what is response bias

Answer 2

what interview wants is wants is what he gets

Question 3

what is prestige bias

Answer 3

what appears favourable

Question 4

what is recall bias

Answer 4

unable to remember the event properly (prospective studies eliminate this)

Question 5

what can you do if your exposure or outcome are missing/ later variables.

Answer 5

• proxy

Question 6

what can you do if your confounder is a missing variable

Answer 6

• if a proxy if possible

- consider the potential consequences to the validity of your analyses of not including this variable