CHDA EXAM QUESTIONS WITH VERIFIED ANSWERS
(GRADED A+)
Name of element, definition, application in which the data element is found, locator key, ownership,
entity relationships, date first entered system, date element terminated from system, and system of
origin are all examples of:
a. Auto authentication fields
b. Metadata
c. Data
d. Information fields
Metadata
A computer software program that assigns appropriate MS-DRGs according to the information
provided for each episode of care is referred to as a(n) _____.
a. Case mix analyzer
b. Encoder
c. Severity of illness program
d. Grouper
Grouper
Which graph is the best choice to use when exploring the relationship between length of stay and
charge for a set of patients?
a. Line graph
b. Bar chart
c. Pie chart
d. Scatter diagram
Scatter diagram
This type of data display tool is used to illustrate frequency distributions of continuous variables, such
as age or length of stay (LOS):
a. Bar graph
b. Histogram
c. Pie chart
d. Scatter diagram
Histogram
In analyzing the reason for changes in a hospital's Medicare case-mix index over time, the analyst
extract data from the information warehouse at which level of detail?
a. Discharge level
b. MS-DRG level
, c. MDC level
d. MS-DRG triples, pairs, and singles
Discharge level
Under what circumstances is it acceptable to use a non-probability sample for an audit?
a. When the variable of interest is rare
b. When a large probe sample was previously selected
c. When the variable of interest is readily observable
d. When not generalizing to the population
When not generalizing to the population
In comparing mortality rates between hospitals, it is important to also consider the _____.
a. Admit sources
b. Average length of stay
c. Geometric length of stay
d. Severity of illness
Severity of illness
The post-operative infection rate for a sample of cases for one unit in a hospital was 3 percent in a
sample of 150 cases. What range represents a 95-percent confidence interval for the population post-
operative infection rate?
a. (0.0 percent, 50.0 percent)
b. (0.3 percent, 5.7 percent)
c. (0.5 percent, 7.9 percent)
d. (1.0 percent, 9.3 percent)
b. (0.3 percent, 5.7 percent)
A group process technique that involves the steps of silent listing, recording each participant's list,
discussing, and rank ordering the priority or importance of items; allows groups to narrow the focus of
discussion or to make decisions without becoming involved in extended, circular discussions
Nominal group technique (NGT)
_____ develops standards for exchange of clinical images
Digital Imaging and Communications in Medicine (DICOM)
A sampling technique that divides the population into subsets and then selects a random sample
within each subset is called _____.
a. Simple random sampling
b. Stratified random sampling
c. Cluster sampling
d. Systematic sampling
Stratified random sampling
(GRADED A+)
Name of element, definition, application in which the data element is found, locator key, ownership,
entity relationships, date first entered system, date element terminated from system, and system of
origin are all examples of:
a. Auto authentication fields
b. Metadata
c. Data
d. Information fields
Metadata
A computer software program that assigns appropriate MS-DRGs according to the information
provided for each episode of care is referred to as a(n) _____.
a. Case mix analyzer
b. Encoder
c. Severity of illness program
d. Grouper
Grouper
Which graph is the best choice to use when exploring the relationship between length of stay and
charge for a set of patients?
a. Line graph
b. Bar chart
c. Pie chart
d. Scatter diagram
Scatter diagram
This type of data display tool is used to illustrate frequency distributions of continuous variables, such
as age or length of stay (LOS):
a. Bar graph
b. Histogram
c. Pie chart
d. Scatter diagram
Histogram
In analyzing the reason for changes in a hospital's Medicare case-mix index over time, the analyst
extract data from the information warehouse at which level of detail?
a. Discharge level
b. MS-DRG level
, c. MDC level
d. MS-DRG triples, pairs, and singles
Discharge level
Under what circumstances is it acceptable to use a non-probability sample for an audit?
a. When the variable of interest is rare
b. When a large probe sample was previously selected
c. When the variable of interest is readily observable
d. When not generalizing to the population
When not generalizing to the population
In comparing mortality rates between hospitals, it is important to also consider the _____.
a. Admit sources
b. Average length of stay
c. Geometric length of stay
d. Severity of illness
Severity of illness
The post-operative infection rate for a sample of cases for one unit in a hospital was 3 percent in a
sample of 150 cases. What range represents a 95-percent confidence interval for the population post-
operative infection rate?
a. (0.0 percent, 50.0 percent)
b. (0.3 percent, 5.7 percent)
c. (0.5 percent, 7.9 percent)
d. (1.0 percent, 9.3 percent)
b. (0.3 percent, 5.7 percent)
A group process technique that involves the steps of silent listing, recording each participant's list,
discussing, and rank ordering the priority or importance of items; allows groups to narrow the focus of
discussion or to make decisions without becoming involved in extended, circular discussions
Nominal group technique (NGT)
_____ develops standards for exchange of clinical images
Digital Imaging and Communications in Medicine (DICOM)
A sampling technique that divides the population into subsets and then selects a random sample
within each subset is called _____.
a. Simple random sampling
b. Stratified random sampling
c. Cluster sampling
d. Systematic sampling
Stratified random sampling
