Deck 10: Statistics and Data Presentation

Question 1

Which of the following retains the original vital statistics certificate for permanent filing?

A) NCHS
B) State registrar
C) Hospital
D) None of the above

Answer 1

State registrar

Question 2

Data collected from births, adoptions, marriages, divorces, deaths, and fetal deaths are all considered:

A) Registers of events
B) Vital statistics
C) Public health statistics
D) Epidemiological data

Answer 2

Vital statistics

Question 3

Which is a measure of dispersion that is computed by taking the square root of the variance, thereby demonstrating how the values are spread around the mean?

A) Mode
B) Median
C) Range
D) Standard deviation

Answer 3

Standard deviation

Question 4

When two groups have very different means, it is best to compare their:

A) Standard deviation
B) Mean
C) Median
D) Coefficient of variation

Question 5

What is the major difference between the gross and net autopsy rates?

A) Net autopsy rate excludes unautopsied coroner's cases.
B) Gross autopsy rate excludes unautopsied coroner's cases.
C) Gross autopsy rate excludes inpatient deaths.
D) Net autopsy rate excludes inpatient deaths.

Question 6

A sample is a subset of a population that is valid if it is a true representation of:

A) The population
B) The subset
C) The mean of the sample
D) The median of the population

Question 7

What was the average length of stay for the following patients: 4, 3, 2, 5, 5, 10?

A) 5.8
B) 4.8
C) 6.0
D) 7.8

Question 8

Which denominator is appropriate for computing the maternal death rate?

A) Total discharges (including deaths) of all patients
B) Total discharges (including deaths) of obstetrical patients
C) Total deaths of obstetrical patients
D) Total discharges of surgical patients

Question 9

What is the term for the number of new cases of a disease?

A) Incidence
B) Prevalence
C) Attack rate
D) Spectrum of disease

Question 10

What type of data is weight, height, temperature, pulse, cost, or charges in dollars?

A) Nominal
B) Ordinal
C) Discrete
D) Continuous

Question 11

What is the term for the number of existing cases of a disease?

A) Incidence
B) Prevalence
C) Mortality
D) Morbidity

Question 12

If a hospital has an SMR of 2.53 for a specific DRG, this means that the hospital has a _____% higher mortality for the DRG than was expected.

A) 153
B) 2.53
C) 1.0
D) 50

Question 13

The ranking of variables according to some criterion is called _____ data.

A) Nominal
B) Ordinal
C) Discrete
D) Continuous

Question 14

Which statistic is most appropriate to use when describing ordinal or ranked data?

A) Mean
B) Median
C) Mode
D) Standard deviation

Question 15

Which statistic represents the number of individuals in a specific category divided by the number of individuals in the category?

A) Rate
B) Percentage
C) Proportion
D) Ratio

Question 16

A type I error is when the researcher:

A) Accepts the null hypothesis when it is false
B) Rejects the null hypotheses when it is true
C) Accepts the alternative hypothesis
D) Both a and b

Question 17

What is the major disadvantage of the range?

A) Based on ordinal data only
B) Based on percentages
C) Based on extreme values and ignores all other values
D) Based on small values and ignores all other values

Question 18

When should the standardized mortality ratio (SMR) be used?

A) When age-specific rates are available
B) When the number of deaths per age category is large
C) When age-specific rates are not available
D) All of the above

Question 19

What is an infection called that occurs more than 72 hours after admission?

A) Community-acquired infection
B) Comorbidity
C) Complication
D) Nosocomial infection

Question 20

When intervals are used in frequency distribution tables, the intervals should be:

A) No less than 5 and no more than 20
B) Of equal width
C) End points that do not overlap
D) All of the above

Question 21

In an 800-bed health care facility during the month of January the total inpatient days for adults were 13,500. What was the average daily census?

A) 439.5
B) 435.5
C) 440
D) 453.5

Question 22

What kind of data is shown?

Question 23

What is it called when every member of the population has the same chance of being included in the sample and the selection of one member has no effect on the selection of another member?

A) Random sample
B) Type II error
C) Population
D) Type I error

Question 24

The average lengths of stay in the intensive care, cardiac care, and intermediate care units were 13, 7, and 4 days, respectively. The three units have seen 18, 10, and 18 patients, respectively. What was the weighted average length of stay?

A) 6.2 days
B) 7.4 days
C) 7.9 days
D) 8.2 days

Question 25

Which of the following should be excluded in computing the net autopsy rate?

A) Death occurring under 48 hours
B) Postoperative deaths
C) Medical examiner deaths that cannot be autopsied
D) None of the above

Question 26

Ten patients were discharged from the obstetrical service on May 4 at Rocky Mountain Hospital. The day's stay for each patient was 3, 2, 1, 1, 6, 5, 1, 2, 2, and 4. What was the median day's stay for these patients?

A) 1
B) 2
C) 3
D) 4

Question 27

The number of medications a person is taking is an example of ordinal data.

Question 28

Referring to the information in below, complete the table for the data shown.

Question 29

Ten patients were discharged from the obstetrical service on May 4 at Rocky Mountain Hospital. The day's stay for each patient was 3, 2, 1, 1, 6, 5, 1, 2, 2, and 4. What was(were) the mode(s) for these patients?

A) 1
B) 2
C) 1 and 2
D) 3

Question 30

The average length of stay for a patient who was admitted and died on the same day is 1 day.

Question 31

What was the relative frequency for the data in the 10,000-14,999 interval?

Question 32

In which column is the ratio specified?

Question 33

Ten patients were discharged from the obstetrical service on May 4 at Rocky Mountain Hospital. The day's stay for each patient was 3, 2, 1, 1, 6, 5, 1, 2, 2, and 4. What was the range for these patients' length of stay?

A) 5
B) 4
C) 3
D) 6

Question 34

What kind of data is shown?

Question 35

Which fiscal agent provided more covered care for females than for others?

Question 36

What is the mean LOS for patients having community-acquired viral pneumonia?

Question 37

In an 800-bed health care facility during the month of January the total inpatient days for adults were 13,500. What was the percentage of occupancy?

A) 54.9%
B) 54.4%
C) 60%
D) 55.4%

Question 38

The standard deviation is the most common measure of variation and is represented by the symbol S.

Question 39

Which is the average number of days of service for each inpatient discharged within a given period?

A) Median
B) Inpatient census
C) Average length of stay
D) Occupancy average

Question 40

What type of data are these examples: the number of records that are analyzed, the number of patients interviewed in a patient satisfaction survey?

A) Continuous
B) Nominal
C) Discrete
D) Ordinal

Question 41

The ____________________ is the difference between the highest and lowest values.

Question 42

What is the median LOS for patients having nosocomial viral pneumonia?

Question 43

Which hospital appears to be located in the suburbs?

Question 44

What kind of data is shown?

Question 45

The ____________________ is the average number of observations.

Question 46

A whole number divided in 100 parts is a ____________________.

Question 47

The _________________________ demonstrates how values are spread around the mean and is the square root of the variance.

Question 48

What data are missing for calculating the weighted mean?

Question 49

The ____________________ denotes the middlemost value when the values are arranged in numerical order.

Question 50

It appears from the information that the leadership perceptions of the majority of students improved as a result of their clinical internship in management. Do you agree or disagree? Explain.

Question 51

What kind of data is shown?

Question 52

What would be the numerator for calculating the incidence rate of cardiovascular disease in the study?

Question 53

Which hospital drew the fewest patients from the city?

Question 54

____________________ is a measure of how often data are classified in the same manner.

Question 55

Which hospital had the fewest admissions for September?