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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
Metadata
Documentation in PDF DDI/XML JSON
Study website
Created on
Oct 30, 2024
Last modified
Oct 30, 2024
Page views
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  • Study Description
  • Data Dictionary
  • Downloads
  • Get Microdata
  • Identification
  • Scope
  • Coverage
  • Producers and sponsors
  • Sampling
  • Survey instrument
  • Data collection
  • Data Access
  • Disclaimer and copyrights
  • Contacts
  • Metadata production
  • 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
    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 ((n
    Ni)/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

    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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