PRITE 2022 - Assorted Pertinent Topics
WITH 100% CORRECT ANSWERS
Biostatistics
Which statistical method attempts to LAST OBSERVATION CARRIED FORWARD
address the effects of participants
dropping out of a study prior to
completion? (7x)
Test that measures what it is supposed to VALIDITY
measure (7x)
What research study examines a group COHORT
studied over a prolonged time period? (6x)
Groups of pts w/ MDD, dysthymic d/o, and ANALYSIS OF VARIANCE
adjustment d/o were given mood scales. In
order to compare the means of scores of
these three groups, most appropriate
statistical methods is what (3x)
A case-control study would be appropriate INCIDENCE OF THE DISEASE IS LOW
in answering an epidemiological question
when the (3x):
What most seriously threatens the external A STUDY POPULATION THAT IS NOT REPRESENTATIVE OF THE POPULATION TO BE
validity of a research study? (3x) TREATED
Which of the following is the major RESIDUAL EFFECTS
negative aspect of crossover designs for
research studies? (3x)
Method for estimating sample size required POWER
to detect statistical effects of defined size
for variables with well-known variances is
referred to as which of the following types
of analysis (3x)?
1/9
, Which statistic measures the magnitude of EFFECT SIZE
difference between two intervention
groups? (3x)
A rating instrument is said to have high RATINGS ARE SIMILAR AMONG DIFFERENT RATERS
reliability when which of the following
properties is demonstrated: (3x)
Researcher is reviewing a questionnaire to CONTENT
screen for MDD, notices that the
questionnaire has no Qs pertaining to
depressed mood but has a few Qs
pertaining to spending sprees. What form
of validity is most affected? (2x)
What is used to report the deviation of a Z SCORE
value from its group mean, expressed in
standard deviation units? (2x)
5 yo boy becomes restless, impulsive, and GOODNESS OF FIT
difficult to manage when not given
sufficient exercise. Teacher gives him
increased motor activity, and his behavior
improves. This is an example of: (2x)
"A group of researchers studied the COHORT
temperament of a group of children at age
3 months, 2 years, 5 years, and 20 years to
determine relationships between initial
temperamental characteristics of children
who eventually had psychiatric problems.
This is an example of what type of study?
(2x)"
Which of the following types of studies is CROSS SECTIONAL
best suited to determine prevalence? (2x)
The purpose of designing a study to use ELIMINATE BIAS DUE TO EXAMINER EXPECTATIONS
the double blind method is to (2x):
A test that detects 98% of the people who HIGH SENSITIVITY AND LOW SPECIFICITY
have a disease, but also provides a false
positive result for many of the people
without the disease, would have a: (2x)
"Researcher wants to compare a new EFFECTIVENESS
atypical antipsychotic to the already
existing atypical antipsychotics. Researcher
wants to conduct the study in routine
clinical situations rather than using highly
selected subjects. Which of the following
study designs would be the most
appropriate? (2x)"
What statistical measure should be used to REGRESSION ANALYSIS
determine how 2 independent variables
affect the frequency of the occurrence rate
of an event? (2x)
Study reports difference that turns out to TYPE I ERROR
be by chance, what error is this? (2x)
2/9
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