RDN Dietary Assessment 3

Question 1

Which biomarker is used to validate protein intake reported on dietary assessment tools?

Accepted Answer

24-hour urinary nitrogen

Answer

24-hour urinary nitrogen output is a reliable biomarker for verifying dietary protein intake because urinary urea nitrogen reflects protein catabolism.

Question 2

A food frequency questionnaire (FFQ) is BEST suited for which of the following research purposes?

Accepted Answer

Ranking individuals by dietary exposure in epidemiological studies

Answer

FFQs are designed to rank individuals by long-term dietary patterns and are widely used in large-scale epidemiological research.

Question 3

Attenuation bias in nutrition research refers to which phenomenon?

Accepted Answer

Underestimation of diet-disease associations due to measurement error

Answer

Measurement error in dietary assessment attenuates (weakens) observed associations between diet and disease outcomes toward the null.

Question 4

When assessing dietary intake in an elderly patient with cognitive decline, which method is MOST appropriate?

Accepted Answer

Proxy-assisted 24-hour dietary recall

Answer

Proxy-assisted recalls involve a caregiver or family member providing dietary information, which improves accuracy when the patient cannot self-report reliably.

Question 5

The 'flat slope syndrome' in dietary assessment describes a situation where:

Accepted Answer

High consumers under-report and low consumers over-report

Answer

Flat slope syndrome describes regression to the mean in dietary reporting, where high consumers under-report and low consumers over-report, compressing the true distribution.

(RDN) Registered Dietitian Nutritionist Practice Test

(RDN) Registered Dietitian Nutritionist Practice Test

RDN Dietary Assessment 3