01
Choose one
1 point
A cohort study finds that people who eat more of a particular food have better health. Which interpretation is best supported?
Free Practice Quiz Question List
8 Evaluating Nutrition Evidence and Applying Nutrition Principles Online Quiz Questions
Use this free practice quiz with 20 questions to review 8 Evaluating Nutrition Evidence and Applying Nutrition Principles, test your knowledge, and prepare for your next test or exam.
20 questions
02
True or false
1 point
In a randomized controlled trial, assigning participants by chance to an intervention or comparison group can reduce differences between the groups.
- A
True
- B
False
03
Fill in the blank
1 point
A researcher asks a participant to report what they remember eating and drinking on one recent day. This assessment tool is a .
04
Choose one
1 point
A study finds that a dietary intervention changes blood cholesterol. What can you conclude from that finding alone?
- A
A biomarker change proves that the diet prevents heart attacks.
- B
A biomarker is more directly meaningful than a health event because it can be measured sooner.
- C
A biomarker change alone does not establish that the diet prevents heart attacks.
05
Written response
1 point
Researchers measure participants’ dietary habits and health at roughly the same time, then describe the relationship between them. What study design is this?
06
Choose one
1 point
Which statement best describes how to judge a systematic review or meta-analysis?
- A
A meta-analysis is reliable whenever it combines results from many studies.
- B
A review’s conclusions depend on the quality, comparability, and completeness of the studies it includes.
07
Fill in the blank
1 point
Carbohydrates, protein, and fat are . Vitamins and minerals are .
08
Choose all
1 point
When judging whether a reported nutrition finding is meaningful and dependable, select all useful considerations.
- A
Consider the size of the effect and, when provided, confidence intervals.
- B
Treat a statistically significant result as proof that the effect is practically substantial.
- C
Check whether other well-conducted studies point in the same direction.
- D
Dismiss the result solely because the research received industry funding.
09
Written response
1 point
Researchers follow people over time and compare health outcomes among those with different usual eating habits, without assigning diets. What study design is this?
10
True or false
1 point
A supplement claim about how a product may affect the body is not, by itself, proof that the product prevents or treats disease.
- A
True
- B
False
11
Choose one
1 point
A headline claims that carbohydrates are harmful. Which response best applies the material’s guidance?
- A
Avoid all foods containing carbohydrates because they share the same health effects.
- B
Compare the foods and the underlying research question, then consider how the foods fit into the overall pattern.
- C
Judge a food’s healthfulness from one ingredient without considering the rest of the diet.
12
Open ended
1 point
A news article says a food prevents disease based on one nutrition study. Describe how you would evaluate whether that claim is justified, including at least four considerations.
13
Choose one
1 point
Which statement best reflects the relationship between energy balance and health?
- A
Energy balance is a complete measure of health and reflects personal effort alone.
- B
Energy intake and expenditure influence body energy stores over time, but energy balance alone does not measure health or personal effort.
- C
Energy intake has no influence on body energy stores.
14
Choose one
1 point
Which research question most clearly specifies a population, dietary intervention, comparison, outcome, and time period?
- A
Among all adults, do lower-sodium foods improve health compared with high-sodium foods?
- B
Among adults with elevated blood pressure, does replacing some salty packaged foods with lower-sodium choices, compared with usual eating, reduce blood pressure over six months?
- C
Do people who eat less salt have lower blood pressure?
- D
Does a lower-sodium diet prevent heart attacks in adults?
15
True or false
1 point
A study measures participants’ eating habits and health status at one point in time. Can this design usually establish whether the diet caused the health condition?
- A
True
- B
False
16
Choose one
1 point
Why might one 24-hour dietary recall fail to represent a person's usual intake?
- A
It records food as it is consumed over several days.
- B
It captures intake remembered for one recent day, which may not reflect a person's usual intake.
- C
It asks how often selected foods are usually eaten over a longer period.
- D
It measures diet and health at roughly the same time.
17
Written response
1 point
A researcher asks participants to remember and report what they ate and drank on one recent day, then repeats this assessment on several different days. What dietary assessment method is being repeated?
18
Choose one
1 point
Researchers want to study habitual dietary patterns and health outcomes over many years, where assigning people to diets for that entire period would be impractical. Which broad approach is especially useful for this purpose?
- A
Randomized controlled trials, because randomization makes long-term dietary adherence easy to maintain.
- B
Observational studies, because they can examine habitual diets and long-term outcomes that may be impractical or unethical to test in a trial.
- C
Cross-sectional studies, because measuring diet and health at one time establishes which came first.
- D
Case-control studies, because looking backward eliminates inaccurate recall of past diets.
19
Written response
1 point
Which dietary assessment tool asks people how often selected foods are usually eaten over a longer period?
20
Choose all
1 point
Researchers studying an uncommon disease compare people who have it with similar people who do not, then investigate their earlier diets. Select all statements that accurately describe this study approach or a limitation of it.
- A
They can be efficient for studying uncommon diseases.
- B
They assign participants by chance to different diets.
- C
They look backward for possible exposures among people with and without the outcome.
- D
Past diet may be recalled inaccurately.