A review of research reveals two articles that have conflicting results. A national randomized controlled trial found that annual brain scans will allow early detection and treatment of brain cancers, reducing mortality by 65%
An international quasi-experimental trial reported no significant reduction in mortality with annual scans. Based on your review, propose the best recommendation. A) Recommendations from the national study should be followed.
B) Recommendations from the international study should be followed.
C) There is no rigorous research that can support a recommendation.
D) Recommendations should be stratified according to where the research was conducted.
A
Feedback:
Methodologically, the main design issue in quantitative studies is whether the research design provides the most valid, unbiased, and interpretable evidence possible. Indeed, there usually is no other aspect of a quantitative study that affects the quality of evidence as much as research design. RCTs are the "gold standard" for intervention studies (Therapy questions) because they yield the highest-quality evidence about the effects of an intervention. Therefore, the best recommendation would be to follow the recommendations from the national randomized controlled trial because it is more authoritative than the quasi-experimental trial.
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