A large group of men who are obese are broken down into groups by age. They are then randomly selected into subgroups for a study evaluating a new weight loss program. What type of sample is this?
a. random sample
b. stratified random sample
c. cluster sample
d. none of these
Answer: b. stratified random sample
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A nurse is caring for a neonate who is 22 inches in height. The nurse explains to the neonate's mother that by 1 year, the infant's expected height will be:
a. 29 inches. b. 33 inches. c. 44 inches. d. 56 inches.
An agricultural worker is picking fruit on a day when the air temperature is 106 °F. Which of the following processes will most likely be occurring while he works?
A) Conduction of heat from the air will be heating his skin surface and raising his core temperature. B) Blood volume at his skin surface will be increasing to dissipate heat. C) His autonomic nervous system will be stimulating him to sweat. D) Radiation from his skin surfaces will be dissipating heat into the environment.
There are impediments that make the practice of evidence-based practice difficult. Which of the following are impediments to evidence-based practice? (Select all that apply.)
1. Complexity of science and technology 2. Difficulty of nowledge transformation 3. Variety of knowledge forms 4. Number of patient diagnoses 5. Evidence summary 6. Application of quality improvement
Toxic substances have received a great deal of attention in governmental regulations and the news media. When determining ways to control the effects of exposure, the nurse must consider the anticipated risk
Anticipated risk is primarily determined by what characteristic of a substance? A) Toxicity B) Prevalence C) Neurotoxic effect D) Amount in the environment