Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
WEEK 2:
An epidemiologist's toolkit:
| Question | Answer |
|---|---|
| observational studies | investigator passively observes as nature takes its course |
| interventional studies | investigator actively manipulates study participants |
| types of observational studies (4) | ecological, cross-sectional, case control, and cohort studies |
| example of interventional study | RCTs |
| interventional studies are used to | assess the safety, tolerability and effectiveness of interventions based on experiments on many individuals |
| observational studies are used to | show patterns of distribution of disease and factors which may be associated with disease in whole population and to collect data to make association between a disease and an exposure |
| when can we not use RCTs | ethnicity (as researcher cant randomly allocate it), smoking (its unethical), and questions that dont involve testing a hypothesis |
| order of hierarchy of evidence (top to bottom) based on quality of evidence | systematic reviews and meta analysis, RCTs cohort studies, case control studies, cross sectional surveys, and ecological studies |
| process of hypothesis testing | Set up the hypothesis (association). State the null hypothesis (no association) Sometimes referred to as H0 Summarise the data Interpret probability of no association |
Created by:
22tango
Popular Medical sets