types of bias in studies

Question 1

what is selection bais

Answer 1

participants in study do not represent target population

Question 2

what is an example of selection bias

Answer 2

study on exercise only includes young, healthy people
may not apply to unhealthy older individuals who the study was intended for

Question 3

what is attrition bias

Answer 3

participants drop out of the study which changes results

Question 4

what does attrition mean

Answer 4

people dropping out mainly I guess

Question 5

what is measurement bias

Answer 5

tools to collect data are innacurate

Question 6

what is an example of measurement bias

Answer 6

scare used to measure weight is broken and shows a lower number in a study about weight loss

Question 7

what is performance bias

Answer 7

ppl in 2 different groups get treated differently which affects results

Question 8

what is the Hawthorne effect and what type of bias is it related to

Answer 8

knowing you’re being watched makes you act differently, skews results
related to performance bias

Question 9

what is reporting bias

Answer 9

only certain information is shared

ex. study on a drug but doesn’t report side effects.