Meta-analysts depend on the calculation of an index that encapsulates in a single number the relationship between the independent and dependent variables in each study. An example of this calculation is which of the following?
A) Inclusion criteria
B) Forest plot
C) Cohen's d
D) Moderator analyses
C
Feedback:
Cohen's d, the effect size index most often used, transforms all effects into standard deviation units (Chapter 12). If d were computed to be .50, it means that the group mean for one group was one-half a standard deviation higher than the mean for the other group—regardless of the original measurement scale. Visual inspection of heterogeneity usually relies on the construction of forest plots, which are often included in meta-analytic reports. A forest plot graphs the effect size for each study, together with the 95% CI around each estimate. Inclusion criteria are the characteristics that a primary study must possess to be included in the meta-analysis. One strategy for exploring moderating effects on effect size is to do subgroup analyses (moderator analyses), which involve splitting effect size information into distinct categorical groups—for example, men and women.
You might also like to view...
The long-term diabetic has had a glycosylated hemoglobin (HbA1c) test done to evaluate the effectiveness of his glucose control. The nurse evaluates the laboratory report of 5% to indicate that the effectiveness of the glucose control is:
a. excellent. b. good. c. fair. d. poor.
The nurse is planning care for a patient who has just had a permanent tracheostomy following total laryngectomy
What should the nurse consider when planning this care? Note: Credit will be given only if all correct choices and no incorrect choices are selected. Select all that apply. 1. The patient will require isolation until the site is healed. 2. The patient will require enteral feedings until healed. 3. Writing will be an important form of communication immediately postoperatively. 4. The patient will be unable to speak normally 5. The family will be unable to communicate with the patient.
What is the expected action when capillary pores increase in size?
A. Increased filtration, increased plasma volume B. Increased filtration, decreased plasma volume C. Decreased filtration, increased plasma volume D. Decreased filtration, decreased plasma volume
A client has a health condition that affects her ability to sweat. The nurse realizes that the sweat glands are epidermal appendages known as:
1. apocrine glands. 2. eccrine glands. 3. hydriatric glands. 4. sebaceous glands.