INFECTION PREVENTIONIST POST TEST
2026 ACTUAL EXAM TEST WITH
QUESTIONS AND CORRECT ANSWERS
GRADED A+
Describe case-control vs cohort studies related to knowledge of
outcomes Correct Answer case-control studies start with
knowledge of who does and does not have the outcome of
interest while cohort studies start with the population and follow it.
Rank study types from most reliable to least reliable Correct
Answer Systematic reviews,
Randomized clinical trials,
Quasi-experimental studies,
Cohort studies,
Case-control studies,
Cross-sectional studies,
Case reports / case series
"this section" of published paper is a summary of purpose,
methods, main findings and conclusions. Correct Answer Abstract
,"this section" of published paper presents justification for and
purpose of the research in the context of the existing problem and
it relationship to other current research. Correct Answer
Introduction
"this section" of published paper describes the study population,
inclusion criteria and strategies used to determine sample size
and for data analysis. Correct Answer Materials and methods
"this section" of published paper is where data is presented
narratively and summarized in tables and/or figures. Correct
Answer Results
"this section" of published paper includes interpretation of major
findings, statement of study limitation and suggestions for
applications of findings Correct Answer Discussion
T/F: Statistics can prove either an association or causality exists
Correct Answer False;
Statistics cannot prove either an association or causality; it can
merely suggest that an association exists.
Some questions regarding the IP's role in analysis of statistics
Correct Answer Are the findings statistically significant?
,Was the sample size large enough to demonstrate a difference if
there is one?
Are the groups being compared truly similar?
What are the measures of central tendency? Correct Answer
Mean - average
Median- midpoint of observations (ignores extreme values)
Mode - observation that occurs the most frequently (determines
height and shape of a curve)
If something is statistically significant, it REJECTS or DOES NOT
REJECT null hypothesis;
explain Correct Answer Rejects Null hypothesis; there is sufficient
evidence to support that sampling variation or chance is an
unlikely explanation for findings
If something is not statistically significant, it REJECTS or DOES
NOT REJECT null hypothesis;
explain Correct Answer Does NOT reject Null hypothesis;
there is not sufficient evidence that sampling variation is the likely
explanation for findings
, If a = 0.05, then a p value of less than 0.05 would cause you to
REJECT or FAIL TO REJECT null hypothesis Correct Answer
REJECT Null Hypothesis
If a = 0.05, then a p value of greater than 0.05 would cause you to
REJECT or FAIL TO REJECT null hypothesis Correct Answer
FAIL TO REJECT Null Hypothesis
___ is a measure of the probability that a test correctly identifies
as + persons who have a disease Correct Answer Sensitivity
___ is a measure of the proportion of persons with a + test who
have a disease Correct Answer Positive predictive value (PPV)
___ is a measure of the probability that a test correctly identifies
persons without a disease as negative Correct Answer Specificity
___ is a measure of the proportion of persons without a disease
who test negative Correct Answer Negative predictive values
(NPV)
False Positive is known as a Type I or II Error Correct Answer
False Positive = Type I Error
2026 ACTUAL EXAM TEST WITH
QUESTIONS AND CORRECT ANSWERS
GRADED A+
Describe case-control vs cohort studies related to knowledge of
outcomes Correct Answer case-control studies start with
knowledge of who does and does not have the outcome of
interest while cohort studies start with the population and follow it.
Rank study types from most reliable to least reliable Correct
Answer Systematic reviews,
Randomized clinical trials,
Quasi-experimental studies,
Cohort studies,
Case-control studies,
Cross-sectional studies,
Case reports / case series
"this section" of published paper is a summary of purpose,
methods, main findings and conclusions. Correct Answer Abstract
,"this section" of published paper presents justification for and
purpose of the research in the context of the existing problem and
it relationship to other current research. Correct Answer
Introduction
"this section" of published paper describes the study population,
inclusion criteria and strategies used to determine sample size
and for data analysis. Correct Answer Materials and methods
"this section" of published paper is where data is presented
narratively and summarized in tables and/or figures. Correct
Answer Results
"this section" of published paper includes interpretation of major
findings, statement of study limitation and suggestions for
applications of findings Correct Answer Discussion
T/F: Statistics can prove either an association or causality exists
Correct Answer False;
Statistics cannot prove either an association or causality; it can
merely suggest that an association exists.
Some questions regarding the IP's role in analysis of statistics
Correct Answer Are the findings statistically significant?
,Was the sample size large enough to demonstrate a difference if
there is one?
Are the groups being compared truly similar?
What are the measures of central tendency? Correct Answer
Mean - average
Median- midpoint of observations (ignores extreme values)
Mode - observation that occurs the most frequently (determines
height and shape of a curve)
If something is statistically significant, it REJECTS or DOES NOT
REJECT null hypothesis;
explain Correct Answer Rejects Null hypothesis; there is sufficient
evidence to support that sampling variation or chance is an
unlikely explanation for findings
If something is not statistically significant, it REJECTS or DOES
NOT REJECT null hypothesis;
explain Correct Answer Does NOT reject Null hypothesis;
there is not sufficient evidence that sampling variation is the likely
explanation for findings
, If a = 0.05, then a p value of less than 0.05 would cause you to
REJECT or FAIL TO REJECT null hypothesis Correct Answer
REJECT Null Hypothesis
If a = 0.05, then a p value of greater than 0.05 would cause you to
REJECT or FAIL TO REJECT null hypothesis Correct Answer
FAIL TO REJECT Null Hypothesis
___ is a measure of the probability that a test correctly identifies
as + persons who have a disease Correct Answer Sensitivity
___ is a measure of the proportion of persons with a + test who
have a disease Correct Answer Positive predictive value (PPV)
___ is a measure of the probability that a test correctly identifies
persons without a disease as negative Correct Answer Specificity
___ is a measure of the proportion of persons without a disease
who test negative Correct Answer Negative predictive values
(NPV)
False Positive is known as a Type I or II Error Correct Answer
False Positive = Type I Error
