Part 1 Flashcards
What is a systematic error in a study that is caused by problems with selection/assignments of the patient and measurements involved in the study?
Bias
What is a bias with regard to what research is likely to be published among what is available to be published?
Publication Bias
What is a bias where the idea is that we often see and hear what we expect rather than what is actually happening?
Expectation Bias
What is a bias that has systematic differences between groups in the care that is provided or in exposure to factors other than the interventions of interest?
Performance Bias
What are the 5 steps of EBC?
- Ask clinically relevant Q
- Search literature to find best evidence
- Evaluate validity and applicability of evidence
- Apply evidence to clinical situation
- Evaluate effectiveness of previous step and revise if needed.
What are the basic principles of EBC?
Pt Preference
CLinical Experience
Research Available
What makes a case study different?
It has no methods or results
What is a systematic error?
1 group moves in only 1 direction
When groups are evenly distributed and 1 group moves in both directions this is known as?
Random Error
How do you avoid random error?
Randomization
When patients are randomly assigned to treatment and control groups to prevent random error and to create an equal distribution of known AND unknown prognostic factors this is known as?
Randomization
What is it called when patients are separated into homogenous subgroups based on factors such as age or disease severity?
Blocking
Are they equal numbers of people in each group when blocking?
Yes
What is it called when assignment is concealed from researchers to avoid the temptation of alloying patients with certain traits to groups that will receive special treatment?
Allocation Concealment
What are the 5 roles that can be blinded?
- Patient
- Treating Doctor
- Outcome Assessor
- Data Collector
- Researchers
