The biggest difference between Observational studies and Experimental
research is( )
A: Intervention or treatment
B: Prospective
C: Random allocation
D: Paralleled control group
E: Blinding
research is( )
A: Intervention or treatment
B: Prospective
C: Random allocation
D: Paralleled control group
E: Blinding
举一反三
- 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
- What is the difference between experimental group and control group? A: Treatment B: Effect C: Sampling error D: Observation time E: Location
- The treatment group A: is group of individules who are not subject to the intervention being studied B: is group of individules who are subject to the intervention being studied C: has no difference with control group D: generally has higher income than the control group
- 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
- The control group A: generally has higher income than the control group B: has no difference with control group C: is group of individules who are not subject to the intervention being studied D: is group of individules who are subject to the intervention being studied