A researcher conducts a statistical test that reveals that the four groups analyzed differed. The researcher wants to discover which one or ones of the four differed from the others. The researcher must then perform a post hoc analysis
What will this involve?
a. Design of a second research study, using a new sample
b. Descriptive statistics about the sample demographics
c. Qualitative research generating new themes and ideas
d. A second statistical test using the original data
ANS: D
Post hoc analyses are commonly performed in studies with more than two groups when the analysis indicates that the groups are significantly different but does not indicate which groups are different. A post hoc analysis must be performed to determine which of the three groups are significantly different. In other studies, the insights obtained through the planned analyses generate further questions that can be examined with the available data.
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The parents of a set of fraternal twins are concerned about the differences in the growth and development between the children. The principle of growth and development that will best explain this to the parents is:
1. The sequence of each stage is predictable, although the time of onset, length of the stage, and the effects of each stage vary with the person. 2. Each developmental stage has its own characteristics. 3. Development becomes increasingly differentiated. 4. Certain stages of growth and development are more critical than others.
Why does a nurse move a patient who has been confined to bed for a few days slowly from a sitting to a standing position?
a. Fatigue b. Muscle injury c. Sensory disorientation d. Orthostatic hypotension
In patient-focused care
A) the team plans, makes decisions, and delivers care based on the patient's needs. B) the managers are like coaches. C) a multidisciplinary team provides the care. D) all of the above
The nurse has completed teaching related to dietary management of coronary heart disease (CHD). Which patient statement indicates that teaching has been effective?
A. "Drinking a couple of glasses of milk each day will give me better protein." B. "I will watch my fiber intake so I don't get too much." C. "I can lower my trans fatty acids by switching to the soft margarines and vegetable spreads." D. "Well, I'll just have to go buy some of that coconut oil to cook with."