Tunisian National Nutrition Survey 1996-1997

Tunisia, 1996 - 1997

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Reference ID

TUN_1996-1997_TNNS_v01_M_v01_A_ESS

Producer(s)

National Institute of Nutrition and Food Technology, Tunisia

Collection(s)

FAO - Food and Agriculture Microdata Catalog

Metadata

Documentation in PDF DDI/XML JSON

Study website

Created on

Oct 30, 2024

Last modified

Oct 30, 2024

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Identification

Survey ID number

TUN_1996-1997_TNNS_v01_M_v01_A_ESS

Title

Tunisian National Nutrition Survey 1996-1997

Abbreviation or Acronym

TNNS 1996-1997

Country/Economy

Name	Country code
Tunisia	TUN

Study type

Individual Food Consumption/Dietary Survey [hh/ifcs]

Abstract

The objectives were to:
-Identify nutritional problems, severity and distribution according to regions/areas and socio-economic factors.
-Assess food consumption according to population demographic characteristics.
-Identify population groups with malnutrition deficiency or excess.
-Elaborate nutritional mapping according to the action plan adopted by all the countries, including Tunisia, at the World Food Summit in Rome in 1996.
-Identify vulnerable population groups in food insecurity situation by carrying out a causal analysis of the factors affecting their nutritional status.
-Realise a comparative analysis with the 1973-75 survey to know the changes and trends in nutritional status.
-Identify regions at risk to optimize and target intervention programs.
-Create a database for the planning, surveillance, monitoring and evaluation of nutritional interventions.

Kind of Data

Sample survey data [ssd]

Unit of Analysis

Individuals

Scope

Notes

The survey collected information on:

Subjects: information on the participants such as age, sex and geographical location.
Consumption: information on all foods consumed by each participant in each survey day, including quantities and nutrient values.

Coverage

Geographic Coverage

National coverage, both urban and rural areas.

Producers and sponsors

Primary investigators

Name
National Institute of Nutrition and Food Technology, Tunisia

Sampling

Sampling Procedure

It was a cross-sectional health study providing a large nationally representative sample of the Tunisian population and was conducted in 1996 and 1997. The sample of the survey was selected to be representative of the whole country. It was a random sample stratified at two levels (by district and then by household), taken from the database of the population, and lodging census that was carried out in 1994. At baseline, 1800 households situated at 300 districts of 6 households each were included.

Weighting

Total households in stratum (S) = N
Size of a sample district (Di), is equal to Ni
Number of sample districts for stratum (S) = n
In the first degree;
Probability of selection randomly the district (Di) in the stratum (S) = (nNi)/N
In the second degree, 6 households were random selected per sample district;
Probability of second degree random selection = 6/Ni
Definitive sampling rate by stratum ((nNi)/N)(6/Ni)= (6n)/N
Raising coefficient for the district (Di) is equal to N/6n

Survey instrument

Methodology notes

The dataset was anonymized using Statistical Disclosure methods by the Data Dissemination Team of the Statistics division at FAO. All direct identifiers have been removed prior to data submission.

Data collection

Dates of Data Collection

Start	End
1996-06-27	1997-12-28

Mode of data collection

Face-to-face paper [f2f]

Data Collection Notes

In this study, dietary intake was assessed using a 3-day food record (two weekdays and one weekend day) to collect the types and amounts of the meals, foods and beverages consumed. Trained dieticians visited the selected households to give participants detailed information about the objectives and the process of the survey, and instructions on how to record the amount of foods consumed using household tableware. Dieticians insist on the respondents not changing their eating habits.

The first step of the 3-day food record was self-administered by the subjects at home. The day of the survey, dieticians reviewed unclear descriptions, errors, omissions, or doubtful entries in the filled pre-printed form and asked the participants to clarify them. For each dish, a list of ingredients, the estimated weight of the raw edible portion and method of preparation were collected from the women in charge of food preparation. We asked for the state of the food consumed (as purchased, raw edible part, cooked edible portion). The accuracy of portion size of consumed foods was checked using photos of food portions and known weight/specific portions.

Data Access

Confidentiality

Is signing of a confidentiality declaration required?	Confidentiality declaration text
yes	The users shall not take any action with the purpose of identifying any individual entity (i.e. person, household, enterprise, etc.) in the micro dataset(s). If such a disclosure is made inadvertently, no use will be made of the information, and it will be reported immediately to FAO

Access conditions

Micro datasets disseminated by FAO shall only be allowed for research and statistical purposes. Any user which requests access working for a commercial company will not be granted access to any micro dataset regardless of their specified purpose. Users requesting access to any datasets must agree to the following minimal conditions:

The micro dataset will only be used for statistical and/or research purposes;
Any results derived from the micro dataset will be used solely for reporting aggregated information, and not for any specific individual entities or data subjects;
The users shall not take any action with the purpose of identifying any individual entity (i.e. person, household, enterprise, etc.) in the micro dataset(s). If such a disclosure is made inadvertently, no use will be made of the information, and it will be reported immediately to FAO;
The micro dataset cannot be re-disseminated by users or shared with anyone other than the individuals that are granted access to the micro dataset by FAO.

Citation requirements

Institut National de Nutrition et de Technologie Alimentaire. Evaluation de l'état nutritionnel de la population Tunisienne. Enquête Nationale 1996–1997

Disclaimer and copyrights

Disclaimer

The user of the data acknowledges that the original collector of the data, the authorized distributor of the data, and the relevant funding agency bear no responsibility for use of the data or for interpretations or inferences based upon such uses

Contacts

Email
fao-who-gift@fao.org

Metadata production

DDI Document ID

DDI_TUN_1996-1997_TNNS_v01_M_v01_A_ESS_FAO

Producers

Name	Abbreviation	Affiliation	Role
Victoria Paduladequadros		Food and Agriculture Organization	Metadata producer
Oluwakayode Anidi		Food and Agriculture Organization	Metadata adapted for FAM
Development Economics Data Group	DECDG	The World Bank	Metadata adapted for World Bank Microdata Library

Metadata version

DDI Document version

Identical to a metadata (TUN_1996-1997_TNNS_v01_EN_M_v01_A_ESS) published on FAO microdata repository (https://microdata.fao.org/index.php/catalog). Some of the metadata fields have been edited.

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