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nutrition

Scale-N Nutrition Survey 2016

United Republic of Tanzania, 2016
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Reference ID
TZA_2016_SNNS_v01_M_v01_A_ESS
Producer(s)
University of Hohenheim (UHOH, Universität Hohenheim), Department of Nutritional Biochemistry (Fachgebiet für Biochemie der Ernährung), Sokoine University of Agriculture, Department of Food Science and Agro-processing, Leibniz Centre for Agricultural Landscape Research e.V. (ZALF, Leibniz-Zentrum
Collections
Nutrition
Metadata
Documentation in PDF DDI/XML JSON
Created on
Feb 26, 2026
Last modified
Jun 01, 2026
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31
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  • Study Description
  • Downloads
  • Get Microdata
  • Identification
  • Scope
  • Coverage
  • Producers and sponsors
  • Sampling
  • Data collection
  • Data Access
  • Disclaimer and copyrights
  • Contacts
  • Metadata production
  • Identification

    Survey ID number

    TZA_2016_SNNS_v01_M_v01_A_ESS

    Title

    Scale-N Nutrition Survey 2016

    Country
    Name Country code
    United Republic of Tanzania TZA
    Study type

    Individual Food Consumption/Dietary Survey [hh/ifcs]

    Abstract

    The Scale-N project is a multidisciplinary study under the call for research proposals published in 2013 titled “Nutrition - Diversified Agriculture for a Balanced Nutrition in Sub-Saharan Africa”. This program is financially supported by the German Federal Ministry of Food and Agriculture based on the decision of the Parliament of the Federal Republic of Germany through the Federal Office for Agriculture and Food. The Scale-N project aims to achieve food and nutrition security of the rural population in Tanzania by supporting and developing a nutrient sensitive agricultural production and improving nutritional behavior. The major tasks of the nutritional study in 2016 were to assess anthropometrics, blood micronutrient status, and dietary intake including 24 hours recalls among mothers and/or caregivers and their school-children from four villages, two in each of the districts Chamwino and Kilosa.

    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

    Sub-national coverage, only rural areas.

    Universe

    The population groups covered in the dataset were adult women (mothers/caregivers) and their school-age children (5-10 years old).

    Producers and sponsors

    Primary investigators
    Name
    University of Hohenheim (UHOH, Universität Hohenheim), Department of Nutritional Biochemistry (Fachgebiet für Biochemie der Ernährung)
    Sokoine University of Agriculture, Department of Food Science and Agro-processing
    Leibniz Centre for Agricultural Landscape Research e.V. (ZALF, Leibniz-Zentrum für Agrarlandschaftsforschung)

    Sampling

    Sampling Procedure

    The households included in the study were sampled from four villages participating in the Scale-N project: Mzula and Chinoje in the Chamwino district, and Tindiga and Mhenda-Kitunduweta in the Kilosa district. The villagers and study population were almost all self-sufficient small-scale farmers.

    The original plan was to include at least 150 households with associated school-age children (6-9 years) in each of the 4 villages. From the village register, and using ENA for SMART software version 2011, more than 165 households that met the inclusion criterion of having a mother and a corresponding school-age child, were randomly selected per village. The village- and hamlet leaders and agriculture extension officers of each village supported the field team in the admission of the mother/caregiver-children pairs to the study at the respective schools of the villages. A total of eligible 669 households with mothers or caregivers and apparently healthy school children aged 5 to 10 years were successfully enrolled in the study.

    The survey was carried out according to the guidelines laid out in the Declaration of Helsinki and approved by the National Institute for Medical Research and the Ministry of Health, Community Development, Gender, Elderly and Children in Dar es Salaam, Tanzania (NIMR/HQ/R.8a/Vol. IX/2226) and the Ethics Committee Landesärztekammer Baden-Württemberg, Stuttgart, Germany (F-2016-049). Written informed consent was obtained from 669 mothers and/or caregivers for the analysis of nutritional status (anthropometry and dietary intake) and the collection of blood for the determination of serum micronutrients. Three households with mother-child pairs were excluded from the analysis due to missing blood draw or uncompleted questionnaires, giving a total sample size of 666 school children within the baseline survey.

    Weighting

    No survey weights were used in this survey.

    Data collection

    Dates of Data Collection
    Start End
    2016-07-18 2016-08-07
    Mode of data collection
    • Face-to-face [f2f]
    Data Collection Notes

    Dietary intake was assessed using quantitative individual 24-hour recalls. No repeated dietary recalls were collected. Portion size estimation was done using participants' estimation of quantities of presented plates and bowls.

    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

    Stuetz W, Gowele V, Kinabo J, Bundala N, Mbwana H, Rybak C, Eleraky L, Lambert C, Biesalski HK. Consumption of Dark Green Leafy Vegetables Predicts Vitamin A and Iron Intake and Status among Female Small-Scale Farmers in Tanzania. Nutrients. 2019 May 7;11(5):1025. doi: 10.3390/nu11051025.

    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
    Name Affiliation Email
    Food and Nutrition Division Food and Agriculture Organization of the United Nations [email protected]

    Metadata production

    DDI Document ID

    DDI_TZA_2016_SNNS_v01_M_v01_A_ESS_FAO

    Producers
    Name Abbreviation Affiliation Role
    Food and Nutrition Division ESN Food and Agriculture Organization of the United Nations Metadata producer
    Statistics Division ESS Food and Agriculture Organization of the United Nations Metadata adapted for FAM
    Back to Catalog
    Food and Agriculture Organization of the United Nations

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