The difference in epidemiological experimental studies compared with prospective cohort studies is
A: Research direction from outcome to causes
B: Established a control group
C: Interventions were implemented for the experimental group
D: Can be used for cause inference
E: Can be used to verify the cause of the hypothesis
A: Research direction from outcome to causes
B: Established a control group
C: Interventions were implemented for the experimental group
D: Can be used for cause inference
E: Can be used to verify the cause of the hypothesis
举一反三
- The biggest difference between Observational studies and Experimental<br/>research is( ) A: Intervention or treatment B: Prospective C: Random allocation D: Paralleled control group E: Blinding
- The difference between the control group and the experimental group was （） A: the training that parents received B: the age of the children C: the books that were read D: the number of the children
- What is the difference between experimental group and control group? A: Treatment B: Effect C: Sampling error D: Observation time E: Location
- Which of the followings are correct about difference-in-difference(DID) quasi-experiment study? A: time series data can be used for DID analysis B: panel data can be used for DID analysis C: DID analysis compares the changes over time in an outcome of the treatment group to changes over the same time period in the outcome of the control group. D: DID analysis is the changes over time in an outcome of the treatment group
- The investigation direction of case-control studies is from exposure to outcome, prospectively.