QUESTIONS WITH VERIFIED ANSWERS |\ |\ |\
Sampling in research may be defined as:
|\ |\ |\ |\ |\ |\ |\
a. insurance that each person has a chance of being included in
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
the study. |\ |\
b. establishment of criteria for eligibility to participate in a study.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
c. identification of the population in which the researcher is
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
interested. |\
d. selection of a subset of a population to represent the whole
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
population. - CORRECT ANSWERS ✔✔ANS: D |\ |\ |\ |\ |\
Sampling involves selecting a group of people, events, behaviors,
|\ |\ |\ |\ |\ |\ |\ |\
or other elements with which to conduct a study. Samples are
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
expected to represent a population of people.
|\ |\ |\ |\ |\ |\
A researcher is interested in studying lifestyle management in
|\ |\ |\ |\ |\ |\ |\ |\ |\
patients with inflammatory bowel disease. The researcher
|\ |\ |\ |\ |\ |\ |\
contacts the Crohn's and Colitis Foundation of America to
|\ |\ |\ |\ |\ |\ |\ |\ |\
determine how to best access this patient population. Patients
|\ |\ |\ |\ |\ |\ |\ |\ |\
with inflammatory bowel disease are an example of which of the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
following?
|\
a. Accessible population
|\ |\ |\
b. Element|\ |\
c. Sample
|\ |\
,d. Target population - CORRECT ANSWERS ✔✔ANS: D
|\ |\ |\ |\ |\ |\ |\
The target population is the entire set of individuals who meet
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
the sampling criteria.
|\ |\
Subjects who participate in a study of patients with inflammatory
|\ |\ |\ |\ |\ |\ |\ |\ |\
bowel disease are described as the:
|\ |\ |\ |\ |\ |\
|\
a. accessible population.
|\ |\ |\
b. element.
|\ |\
c. sample.
|\ |\
d. target population. - CORRECT ANSWERS ✔✔ANS: C
|\ |\ |\ |\ |\ |\ |\
A sample is that group of people who are representing the entire
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
population and participating in the study. Samples are expected
|\ |\ |\ |\ |\ |\ |\ |\ |\
to represent an entire population.
|\ |\ |\ |\
The Crohn's and Colitis Foundation of America referred the
|\ |\ |\ |\ |\ |\ |\ |\ |\
interested researcher to a local chapter of the organization. The
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
local chapter agreed to send out letters on behalf of the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
researcher inviting potential subjects to contact the researcher if
|\ |\ |\ |\ |\ |\ |\ |\ |\
they are willing to participate in a study. Potential subjects in this
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
situation would be described as the:
|\ |\ |\ |\ |\ |\
|\
a. accessible population.
|\ |\ |\
b. element.
|\ |\
c. sample.
|\ |\
d. target population. - CORRECT ANSWERS ✔✔ANS: A
|\ |\ |\ |\ |\ |\ |\
An accessible population is the portion of the target population to
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
which the researcher has reasonable access.
|\ |\ |\ |\ |\ |\
,The population from which the researcher selects the actual
|\ |\ |\ |\ |\ |\ |\ |\ |\
study sample is referred to as the:
|\ |\ |\ |\ |\ |\
|\
a. accessible population.
|\ |\ |\
b. scientific population.
|\ |\ |\
c. target population.
|\ |\ |\
d. theoretical population. - CORRECT ANSWERS ✔✔ANS: A
|\ |\ |\ |\ |\ |\ |\
An accessible population is the portion of the target population to
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
which the researcher has reasonable access. The sample is
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
obtained from the accessible population. |\ |\ |\ |\
In a study of liver transplant recipients, the researcher specifies
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
that the subjects must be 18 years of age or older and the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
recipient of only one liver transplant. These criteria are an
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
example of: |\
|\
a. demographic attributes.
|\ |\ |\
b. exclusion criteria.
|\ |\ |\
c. extraneous variables.
|\ |\ |\
d. inclusion criteria. - CORRECT ANSWERS ✔✔ANS: D
|\ |\ |\ |\ |\ |\ |\
Inclusion criteria are those characteristics that the subject or
|\ |\ |\ |\ |\ |\ |\ |\ |\
element must possess to be part of the target population.
|\ |\ |\ |\ |\ |\ |\ |\ |\
The adequacy of a sample would be primarily based on which of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
the following criteria?
|\ |\
|\
a. Method chosen for sample selection
|\ |\ |\ |\ |\ |\
, b. Representativeness of the population
|\ |\ |\ |\ |\
c. Size of the total population
|\ |\ |\ |\ |\ |\
d. Willingness of subjects to participate - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔ANS: B |\
A sample needs to be representative in terms of characteristics,
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
such as age, gender, ethnicity, income, and education
|\ |\ |\ |\ |\ |\ |\
A sample that accurately reflects the characteristics of the
|\ |\ |\ |\ |\ |\ |\ |\ |\
population from which it is drawn is a: |\ |\ |\ |\ |\ |\ |\
|\
a. cluster sample.
|\ |\ |\
b. purposive sample.
|\ |\ |\
c. random sample.
|\ |\ |\
d. representative sample. - CORRECT ANSWERS ✔✔ANS: D
|\ |\ |\ |\ |\ |\ |\
Representativeness means that the sample, accessible |\ |\ |\ |\ |\ |\
population, and target population are alike in as many ways as
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
possible.
Sample attrition would be reflected by the:
|\ |\ |\ |\ |\ |\
|\
a. average death rate of the population under study.
|\ |\ |\ |\ |\ |\ |\ |\ |\
b. inability to access identified members of a population.
|\ |\ |\ |\ |\ |\ |\ |\ |\
c. number of patients who die while participating in a study.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
d. number of patients who drop out of a study. - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔ANS: D |\ |\
Sample attrition or mortality is the withdrawal or loss of subjects
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
from a study |\ |\