An observational study where the unit of analysis is the population of a community rather than an individual is known as a(n) ____.
A. case study
B. prevalence study
C. cohort study
D. ecological study
Answer: D
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All of the following statements about the physical assessment of a patient with an acute asthma attack are true EXCEPT:
a. sleepiness or stupor indicates severe hypercarbia, hypoxia, and acidosis. b. the disappearance of wheezing during a severe asthma attack is a good sign, because it indicates that bronchospasm has stopped. c. tenting of the skin and dryness of the mucous membranes can indicate dehydration due to the asthma attack. d. young children may not show the positional preferences of older children.
Osteoblasts can be easily confused with:
a. Megakaryocytes b. Osteoclasts c. Plasma cells d. Macrophages
Systematic errors resulting in bias which effect the comparison groups of a study differently is referred to as _______________.
Fill in the blank(s) with the appropriate word(s).
The solids that settle to the bottom of a liquid are known as the ____________________.
Fill in the blank(s) with the appropriate word(s).