40 Questions
What type of data provides information about the nature of food and beverages consumed?
Qualitative data
What is the purpose of using plastic food models in dietary assessment?
To obtain accurate dietary data
What is an example of a visual aid used in dietary assessment?
Serving spoons
What is the primary method of dietary assessment that involves asking participants to remember their food intake?
Food recall
What is the time period typically considered for food recall in dietary assessment?
Past 24 hours
What is the term used to describe the evaluation of nutrient intake data?
Dietary assessment
What is an example of a common household measure used in dietary assessment?
Ruler
What is the type of data that provides information about both the nature and quantity of food and beverages consumed?
Quantitative data
What is a potential limitation of dietary recall methods?
Accuracy depends on memory
What is an advantage of dietary recall methods?
They require a short time to complete
What is the purpose of a Food Frequency Questionnaire (FFQ)?
To rank groups by their consumption
What is a disadvantage of Semi-quantitative FFQ?
It is prone to recalling bias
What is an advantage of using dietary recall methods?
They can be used with literate and semi-literate subjects
Why may repeated recalls be required in dietary recall methods?
To ensure the results are representative of the actual or usual intake
What is an advantage of Semi-quantitative FFQ?
It is able to estimate usual intake
What is a limitation of using FFQs?
They are prone to recalling bias
What type of method is the food record, which involves the participant recording the kind and amount of food consumed during a specific time period?
Prospective method
What is an advantage of the three-day food record method?
It is more accurate than the recall method
What is a limitation of the food record method?
It requires cooperation from the respondent
What can alter consumption practices according to the text?
The act of recording food consumption
What type of information is obtained through the weighed food record method?
Details about the food brand and preparation methods
What is a disadvantage of the food record method?
Response rate is usually low
What is a limitation of the weighed food record method?
It can alter consumption practices
How many days of food records is intake typically collected for?
Three days
What is the main limitation of recalling a single record or dietary information?
Inability to represent typical dietary variations
What is the primary purpose of a dietary history assessment?
To describe usual and/or nutrient intake over a long period of time
What is a major advantage of using dietary history assessments?
They provide information on past long-term dietary patterns
What is the primary purpose of using pictures or models in dietary assessment methods?
To facilitate food recognition and portion size estimation
What is a common issue with using dietary history assessments?
Respondents may overestimate their food intake
What is a characteristic of data collected through participants' synthesis?
More accurate and detailed information
Which type of dietary assessment method is commonly used in case-control studies and cohort studies?
Repeated FFQ during a follow-up period
What is a key challenge in using single record or recall methods to assess dietary information?
Capturing typical dietary variations
What is a limitation of using a single day record or recall in dietary assessment?
It is not representative of a typical intake
What is a type of data that can be collected through dietary history assessments?
Both qualitative and quantitative data
What is the main difference between Willett-Style and Block-style questionnaires?
Portion size is given for each food and frequency of portion is recorded
What is the purpose of the Dietary History-FFQ method?
To discuss dietary habits before recording answers
What is a requirement for conducting dietary history assessments?
Highly trained interviewers
Why is the Dietary History-FFQ method not suitable for micronutrient examination?
It is not feasible in micronutrient examination
What is the advantage of using a repeated FFQ during a follow-up period?
It is more accurate than a single day record or recall
What is the primary goal of dietary assessment methods?
To give an indication about the eating pattern
Study Notes
Dietary Assessment: Introduction
- Dietary assessment is the evaluation of nutrient intake.
- Two types of data are collected: qualitative and quantitative.
- Qualitative data provides information about the nature of food and beverages consumed.
- Quantitative data provides both the nature and quantity of food and beverages consumed.
Methods of Dietary Assessment
A. Retrospective Methods
- Retrospective methods involve asking participants to recall their past diet.
- Food recall is a method where participants are asked to remember what they ate and drank in the past 24 hours or previous day.
- Variations in dietary recall methods include the level of detail and inquiry about different aspects of diet.
Advantages of Food Recalls
- Can be done in a relatively short time.
- Does not affect dietary practices.
- Response burden is low.
- Response rate is high.
- Can be used with literate and semi-literate subjects.
Disadvantages of Food Recalls
- Accuracy depends on memory.
- May not be representative of actual or usual intake.
- Poor estimation of portion size.
B. Food Frequency Questionnaire (FFQ)
- FFQ involves asking participants about the frequency of consumption of specific food items during a specific time period.
- Semi-quantitative FFQ estimates portion size as well.
- Used to rank groups by their consumption and find associations between diet and other outcomes.
Advantages of FFQ
- Examines changes in diet caused by a disease.
- Estimates usual intake.
Disadvantages of FFQ
- Poor estimation of portion size.
- Recalling bias.
C. Dietary History
- Dietary history involves describing usual and/or nutrient intake over a relatively long period of time.
- Data can be qualitative or quantitative.
- Respondents are asked to recall a typical day from morning to bedtime.
Advantages of Dietary History
- Provides information on past long-term intake.
- Information about food habits, changes over time, and food preferences.
Disadvantages of Dietary History
- Requires highly trained interviewer.
- Time-consuming.
- Leads to overestimation.
- Recalling bias.
Prospective Methods
1. Food Records
- Food records involve participants recording the kind and amount of food and beverages consumed during a specific time period.
- Description of food eaten, portion size, brand names, methods of preparation, and timing of eating may be obtained.
- Three-day food records are usually used to assess intake.
Advantages of Food Records
- More accurate than recall method.
- More representative of the usual intake.
Disadvantages of Food Records
- Requires cooperation from the respondent.
- Response rate is usually low.
- Subject must be literate.
- Poor estimation of sample size.
- Omission of food items.
- Some training is required.
2. Weighed Food Record
- Weighed food record involves weighing all food and beverages consumed by the subject during a specific period of time for each eating occasion.
- Includes details about the food brand and preparation methods.
- Steps of food weighing include:
- Weighing food before consumption.
- Weighing plate waste or leftovers.
- Other steps (not specified).
This quiz covers the fundamentals of dietary assessment, including data collection and evaluation of nutrient intake. It is a part of the Nutrition and Food Processing course at Al Balqa Applied University.
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