CPHQ Health Data Analytics 4

Question 1

A quality analyst calculates the 99% confidence interval for a hospital's mortality rate. What does this interval represent?

Accepted Answer

There is a 99% probability the true population rate falls within this interval

Answer

A 99% confidence interval means that if the same study were repeated many times, 99% of the computed intervals would contain the true population parameter.

Question 2

Which data type is represented by patient satisfaction scores measured on a 1-to-5 Likert scale?

Accepted Answer

Ordinal

Answer

Likert scale data is ordinal because the categories have a meaningful rank order, but the intervals between values are not necessarily equal.

Question 3

A hospital's sepsis bundle compliance rate has been at 72% for 8 months with no discernible trend. According to statistical process control theory, this represents:

Accepted Answer

Common cause variation reflecting the natural capability of the current process

Answer

A stable process oscillating around a consistent average without signals reflects common cause variation, meaning only fundamental process redesign will shift the average.

Question 4

In healthcare data warehousing, what is the function of an ETL process?

Accepted Answer

Extract, Transform, and Load data from source systems into a warehouse

Answer

ETL (Extract, Transform, Load) is the process of pulling data from source systems, converting it to a standardized format, and loading it into a data warehouse.

Question 5

A quality team wants to determine if there is a statistically significant association between nursing unit and hospital-acquired infection rates. Which statistical test is most appropriate?

Accepted Answer

Chi-square test of independence

Answer

The chi-square test of independence is used to determine whether there is a significant association between two categorical variables such as nursing unit and infection occurrence.

CPHQ - Certified Professional in Healthcare Quality Practice Test

CPHQ - Certified Professional in Healthcare Quality Practice Test

CPHQ Health Data Analytics 4