Diet Assessment Flashcards
Is a major lifestyle risk factor of a wide range of chronic disease and these risk factors have been recognized globally as key contributors to morbidity and mortality
Diet
is marked by usually continuous and productive activity or change
dynamic
factors that can affect the food variations
preferences
budget
nutritional status
mood
seasonality of food
people consume various foods and drinks, and potentially supplements, each of which has its own profile of nutrients, phytochemicals and other exposures
diet is multidimensional
has been described as the ‘‘numerous attributes of dietary intake and the inherent complexities of interdependence and synergy’’
multidimensionality
is usually measured either objectively or subjectively
dietary intake
why measure diet ?
to improve human health
is a method of indirectly estimating the amounts of food consumed by a country’s population at a certain time
food balance sheet
food balance sheet provides data on
food disappearance
food disappearance can be thought of as the amount of food that ‘‘disappears’’ from the food distribution system
food balance sheet
In this method, the respondents records, at the time of consumption, the identity and amount of all foods and beverages consumed for a period of time, usually ranging from 1 to 7 days
Food record or diary
are used to measure dietary intake within households and institutions where congregate feeding is practiced, such as penal institutions, nursing homes, military bases, and boarding schools
food account
questionnaire consist on ffq
150 0r fewer
types of FFQ’S
simple
non-quantitative
qualitative ffq
a qualitative FFQ with the addition of portion size estimates as standard or small, medium, large
semi-quantitative FFQ
this FFQ ask the respondent to describe the size of his or her usual serving as small, medium or large relative to standard serving
Quantitative FFQ
is used to assess an individual’s usual dietary intake over an extended period of time, such as the past month or year
diet history
household informant is asked by a trained interviewer to recall all food used by the household on ‘‘as purchased’’ basis over a specified period of time
list recall
An inventory is prepared of all food commodities available in the household at the beginning and end of the survey (survey period is usually 1 week)
inventory method
2 ways of assessing food intake of individuals
quantitative
qualitative
the method assesses actual food intake of individual during the previous 24 hours or preceding days
24 hour food recall (single and repeated 24 hour recall)
refer to food record in household level
food record or diary (estimated or weighed)
is a long term dietary assessment method that aims to measure habitual intake of foods and beverages and sometimes supplements, over a long period of time, such as month of the year
Food frequency questionnaire (FFQ)
Reasons for Measuring Diet
A. Assessing and Monitoring Food and Nutrient Intake
B. Formulating and Evaluating Government Health and Agricultural Policy
C. Conducting Epidemiologic Research
D. Commercial Purposes
It is calculated using beginning and ending
inventories, figures on food production, imports and exports, and adjustments for nonhuman food
consumption (for example, cattle feed, pet food, seed, and industrial use)
food balance sheet
