cohort studies

Question 1

what are cohort studies

Answer 1

1. performed on group of patients so you can compare 2 treatments
2. can compare and follow up to see whether pts are doing better or worse

Question 2

advantages of cohort studies

Answer 2

easier to set up - looking at patients already having treatment
dont need to recruit, randomise, and provide treatment for patients

Question 3

disadvantages of cohort studies

Answer 3

can be long process if checking on patients for years
pts can get lost to follow up
only a certain no. of measurements can be set in place (GP)

Question 4

what is cofounding and why does is occur

Answer 4

occurs due to no randomisation procedure in observational studies
- allocated to treatment by GP etc
therefore patients not at same baseline
can cause bias