CTR CTR Epidemiology & Cancer Statistics 2

Question 1

Which measure expresses the probability of dying FROM cancer (rather than with it) over a specified time period?

Accepted Answer

Cause-specific survival rate

Answer

Cause-specific survival counts only deaths attributed to the cancer of interest as events, excluding deaths from other causes.

Question 2

What is the primary purpose of the North American Association of Central Cancer Registries (NAACCR)?

Accepted Answer

To set data standards and certify central cancer registries in North America

Answer

NAACCR develops and promotes uniform data standards, certifies central registries for data quality, and facilitates data sharing across U.S. and Canadian registries.

Question 3

In cancer epidemiology, what does a 'cohort study' examine?

Accepted Answer

A group followed over time to observe who develops cancer

Answer

A cohort study follows a defined population prospectively (or retrospectively) over time to measure cancer incidence and identify risk factors.

Question 4

Which statistic is most useful for assessing whether cancer mortality rates are declining over time in a population?

Accepted Answer

Annual percent change (APC) in age-adjusted mortality rate

Answer

Annual percent change (APC) in age-adjusted mortality quantifies the trend direction and magnitude over time, making it the standard metric for mortality trend analysis.

Question 5

Cancer registries submit data to SEER using which standard file exchange format?

Accepted Answer

NAACCR flat file (fixed-width text format)

Answer

SEER and all major central registries use the NAACCR fixed-width flat file format as the standard for data submission and exchange.

(CTR) Certified Tumor Registrar Practice Test

(CTR) Certified Tumor Registrar Practice Test

CTR CTR Epidemiology & Cancer Statistics 2