Lecture 11: How good is this person's nutrient intake?

Question 1

Which NRV’s are appropriate for use of individuals?

Answer 1

EAR, AI and UL
- not RDI

Question 2

To assess nutrient adequacy, in an ideal world what would you compare?

Answer 2

• Individuals long term usual intake
• Individual’s requirement

Question 3

To assess nutrient adequacy, in the real world what do you compare to get APPARENT ADEQUACY?

Answer 3

• Individual’s observed intake
• Best guess at their requirement = EAR

Question 4

What is apparent adequacy?

Answer 4

An estimate of the confidence one has that usual intake is above (or below) and individuals requirement

Question 5

What does the quantitative approach assume?

Answer 5

• Requirements are normally distributed
• Intakes are normally distributed

Question 6

If observed intake is less than EAR, you probably need to…

Answer 6

Increase intake

Question 7

If observed intake is between EAR and RDI (> EAR and < RDI), you probably need to…

Answer 7

Increase intake

Question 8

If long term observed intake is more than RDI…

Answer 8

Intake is probably adequate

Question 9

If long term observed intake is the same or bigger than AI…

Answer 9

Intake is probably adequate

Question 10

If observed intake is less than AI…

Answer 10

You can’t determine adequacy

Question 11

If observed intake is the same or above UL…

Answer 11

Potential risk if over many days

Question 12

If observed intake is less than UL….

Answer 12

Probably safe if over many days

Question 13

What are limitations of methods for determining individual adequacy?

Answer 13

• Don’t have usual intake (only recorded intake) OR actual requirement
• Assume CV of 10% for SDreq
• Assume SDintake for individuals are similar to pooled data
• Assume no low energy reporting
• Don’t have EAR for all nutrients

Question 14

The NRV’s are used to determine the ??? that an individuals intake meets their own requirement

Answer 14

Probability

Question 15

The ??? ideally uses the EAR and can be used for most nutrients

Answer 15

Quantitative approach

Question 16

Similar approaches can be used for the ?? and ??

Answer 16

AI and UL

Question 17

The ??? provides much less information but has to be used for some nutrients

Answer 17

Qualitative approach

Question 18

What is the Qualitative approach?

Answer 18

focuses on understanding the broader context of food choices, behaviours, and dietary patterns through non-numerical data

Question 19

What is the Quantitative approach?

Answer 19

Involves the use of numerical data to measure and analyse different aspects of diet and nutrition. This method focuses on objective, measurable outcomes.

Question 20

What is Step One of the Quantitative Approach?

Answer 20

Obtain info on individuals usual intake:
- Calculate individuals mean intake
- Find an estimate of day-to-day variation in intakes (ideally national data)

Question 21

What is Step Two of Qualitative Approach?

Answer 21

Choose an appropriate reference standard:
EAR = best guess of individuals actual requirements
RDI = not recommended
AI = can use if its all you’ve got

Question 22

What is Step Three of the Qualitative Approach?

Answer 22

Determine apparent adequacy:
- Using the EAR (ideal)