Free Practice Quiz Question List

7 Dietary Assessment and Nutrition Evidence Online Quiz Questions

Use this free practice quiz with 20 questions to review 7 Dietary Assessment and Nutrition Evidence, test your knowledge, and prepare for your next test or exam.

20 questions

Choose one

1 point

A nutritionist wants to estimate an individual's usual intake while accounting for day-to-day variation. Which approach best fits this goal?

A
Use one 24-hour recall and treat that day as the person's usual diet.
B
Collect repeated 24-hour recalls on nonconsecutive days.
C
Use a brief screener to measure the person's entire diet and total energy intake.
D
Use one food record and assume recording does not affect food choices.

True or false

1 point

True or false: Biomarkers are available and equally informative for every nutrient or food exposure.

A
True
B
False

Written response

1 point

Which dietary assessment method asks how often listed foods and drinks were consumed over a longer period, such as the past month or year?

Fill in the blank

1 point

When usual-intake distributions are appropriately estimated, the EAR can be used to assess the prevalence of in a group.

Choose one

1 point

A researcher wants to estimate the prevalence of inadequate nutrient intake in a group. Why should the researcher not use the RDA as the group's inadequacy cut point?

A
The RDA applies only to food intake and excludes supplements.
B
The RDA is used only when an AI has been established.
C
The RDA is designed to meet the needs of nearly all healthy individuals, so it is not a suitable group-level cut point for estimating inadequacy.
D
The RDA is a safety ceiling rather than an intake recommendation.

Written response

1 point

Which nutrient reference value is a safety reference rather than an intake target?

Fill in the blank

1 point

If a person's intake is below the AI, that fact alone does not establish .

Choose all

1 point

A study's self-reported intake estimates may be inaccurate. Select all of the following that can contribute to error in the estimates.

A
A participant forgets to report oil added during cooking.
B
A participant estimates portion sizes inaccurately.
C
The assessment samples too few days to represent weekday–weekend or seasonal variation.
D
Repeated measurements automatically remove every systematic error.

True or false

1 point

True or false: Repeating short-term dietary measurements by itself removes systematic bias.

A
True
B
False

Choose one

1 point

A cross-sectional study measures diet and a health outcome at one point in time. What is a key limitation when interpreting an association between them?

A
It establishes that the dietary exposure came before the outcome.
B
It generally cannot establish which came first.
C
It eliminates the possibility of confounding.
D
It automatically provides evidence equivalent to a randomized trial.

Choose all

1 point

When evaluating a nutrition claim, which steps help make the interpretation more careful? Select all that apply.

A
Define the population, dietary exposure or intervention, comparison, and health outcome.
B
Check whether the dietary measurement method fits the question and how measurement error was handled.
C
Consider confounding and reverse causation when interpreting observational associations.
D
Treat any observed association as proof that the dietary exposure caused the outcome.

True or false

1 point

True or false: A brief dietary screener generally measures a person's entire diet and total energy intake.

A
True
B
False

Choose one

1 point

A study asks participants to record foods and amounts as they consume them over several days. Which trade-off should the researchers consider?

A
They require no effort and cannot affect food choices.
B
They ask only about the frequency of listed foods over the past year.
C
They can provide detailed intake information but may be burdensome and lead to reactivity.
D
They provide objective evidence about exposure without self-report.

Open ended

1 point

A news report claims that a dietary pattern prevents a health outcome, based on an observational study that found an association. Explain why that finding alone may not establish causation and identify what additional evidence or considerations would strengthen an evaluation of the claim.

Written response

1 point

Which nutrient reference value is used to assess the prevalence of inadequate intake in a group when usual-intake distributions are appropriately estimated?

Choose one

1 point

A large study aims to rank participants by their longer-term eating patterns using a practical method that asks about the frequency of listed foods. Which method best fits this aim?

A
A food record, because it captures foods as they are consumed over several days
B
A food-frequency questionnaire, because it asks about the frequency of listed foods over a longer period
C
A 24-hour recall, because one day's intake represents usual intake
D
A brief screener, because it measures the entire diet and total energy intake

Written response

1 point

What is the dietary assessment method called in which a person records foods and amounts as they consume them, often over several days?

Choose one

1 point

A person's estimated usual intake of a nutrient is below the AI. What conclusion is justified by that information alone?

A
Conclude that the person is definitely nutrient deficient
B
Use the AI as a safety limit that must never be exceeded
C
Do not infer inadequacy from intake below the AI alone
D
Treat the AI as a suitable cut point for estimating a group's inadequacy

Choose one

1 point

A clinician wants to estimate a person's total intake of a nutrient, including intake from supplements. What should the dietary assessment do?

A
Include supplements when estimating total nutrient intake
B
Exclude supplements because nutrient reference values apply only to foods
C
Assume the food-composition database includes each person's supplements
D
Use a single-day food estimate as a substitute for supplement information

Choose one

1 point

A dietary researcher collects recalls on several nonconsecutive days. Which statement best describes what this repetition can and cannot accomplish?

A
Repeated measurements remove both random error and systematic bias
B
Repeated measurements can reduce day-to-day random variation but do not, by themselves, remove systematic bias
C
Repeated measurements increase systematic bias but eliminate random error
D
Repeated measurements have no effect on day-to-day variation