Stats

Question 1

Recall Bias

Answer 1

Recall Bias.

When cases and controls recall exposure differently. Eg I had a particularly bad side effect so I remember that.

Question 2

Rumination Bias / Search for meaning

Answer 2

People with diseases will think harder about their prior exposures than those without the disease.

Question 3

Berksons bias

Answer 3

Hospital controls usually have a higer response rates than the population controls, but more likely to have sampling bias.