Ch 8 Review Questions
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1
Based on the following scientific notation, what is the study design?
ROX1OX2O
ROX2OX1O
ROX1OX2O
ROX2OX1O
- randomized crossover design
- single suject design
- randomized factorial controlled trial
- randomized controlled trial
2
which scientific notation is consistent with a single-subject design
- ROX1OX2O
ROX2OX1O - NOXO
NOO - ABABA
- ROX1fO
ROX2fO
ROX1mO
ROX2mO
3
A researcher is interested in studying the efficacy of a joint protection training program for people with arthritis. Participannts are randomly assigned to the joint protection training program or a treatment as usual condition. In the same study, one-half of the participants in each group randomly receive an orthotic and the other one half do not. What is the type of design
- randomized controlled trial
- randomized crossover design
- randomized factorial design
- retrospective design
4
what type of effect is most important for determing if the intervention group improved significantly more than the control group
- interaction effects
- group effects
- between effects
- within effects
5
A researcher uses chart records from individuals receiving patient services and compares those who received mirror therapy with those who did not. What type of design is described in this scenario?
- randomized controlled trial
- randomized crossover design
- retrospective group comparison design
- pretest-posttest without a control
6
If a researcher examines the time effects in a study by comparing pretest and posttest scores, this could also be described as a:
- interaction effect
- group effect
- within subjects effect
- between subjects effect
7
A cluster randomized controlled trial would be classified as what level of evidence
- I
- II
- III
- IV
8
what potential benefit may a nonrandomized controlled trial have over a randomized controlled trial?
- you can be more confident that the intervention actually resulted in the improvement with a nonrandomized controlled trial
- the nonrandomized controlled trial migh be more similar to real world practive
- the difference in settings is not typically a design concern
- it is more likley that the groups will be equivalent at baseline with a nonrandomized controlled trial
9
All other things being equal, which of the following designs requires a larger sample size
- randomized controlled trial
- crossover design
- single subject design
- factorial design
10
A crossover design is considered to be at the same level of evidence of what other design
- single subject design
- pretest-posttest without a control
- nonrandomized controlled trial
- randomized controlled trial
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