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nutrition

Cassava Intake and Vitamin A Status among Women and Preschool Children in Akwa-Ibom, Nigeria

Nigeria, 2011
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Reference ID
NGA_2011_CIVASWPCAI_v01_EN_M_v01_A_OCS
Producer(s)
International Institute of Tropical Agriculture (IITA)
Collections
Nutrition
Metadata
Documentation in PDF DDI/XML JSON
Created on
Jun 17, 2022
Last modified
Jul 26, 2022
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  • Identification
  • Scope
  • Coverage
  • Producers and sponsors
  • Sampling
  • Data collection
  • Data Access
  • Contacts
  • Metadata production

    • Identification

    Survey ID number

    NGA_2011_CIVASWPCAI_v01_EN_M_v01_A_OCS
    Title

    Cassava Intake and Vitamin A Status among Women and Preschool Children in Akwa-Ibom, Nigeria
    Country
    Name Country code
    Nigeria NGA
    Study type

    Individual Food Consumption/Dietary Survey [hh/ifcs]
    Abstract

    A cross-sectional survey was conducted in rural to moderately-urbanized areas of Akwa-Ibom, a state identified as having high cassava consumption and high vitamin A deficiency prevalence among children. The specific aims were: 1) to quantify the cassava and nutrient intake, and 2) to assess the vitamin A and iron status among preschool children and women of childbearing age.
    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.
      The population groups covered in the dataset were children 6-59 months old and women of childbearing age 18-49 years old.

    Coverage

    Geographic Coverage

    Sub-national coverage, rural to moderately-urbanized areas.

    Producers and sponsors

    Primary investigators
    Name
    International Institute of Tropical Agriculture (IITA)

    Sampling

    Sampling Procedure

    The sample size was based on an estimated 30% prevalence of low serum retinol among children as a primary outcome among children aged 6–59 months and women of childbearing age. The final sample size of 660 households was calculated accepting a type I error of 0.05, a design effect of 2 and adjusting for a 15% drop out rate. The sampling procedure was a multistage cluster selection process of local government areas (LGAs) and further by enumeration areas (EAs), which is the smallest geographical cluster of households. The LGAs are grouped according to the level of urbanization (rural, moderate-urban, and urban) within each state. A comprehensive list of all EAs in selected local government areas was obtained from the State National Population Commission. Of the 31 LGAs in Akwa Ibom (16 rural, 10 moderate-urban, and 5 urban), 10 were randomly selected from the 26 non-urban LGAs, followed by the random selection of three EAs within each LGA. Therefore, each LGA comprised 3 clusters for a total of 30-cluster survey or 22 households per cluster for a total of 660 households.
    Weighting

    No surveys weight were used in this survey.

    Data collection

    Dates of Data Collection
    Start End
    2011-08-01 2011-08-31
    Time periods
    Start date End date
    2011-08-01 2011-08-31
    Mode of data collection
    • Face-to-face [f2f]
    Data Collectors
    Affiliation
    International Institute of Tropical Agriculture
    Data Collection Notes

    An interactive multiple-pass 24-hour recall method was used. To maximize data quality, interviewers were required to submit all questionnaires to the data quality editor (DQE) immediately after leaving the household and any existing error was corrected in the field under the DQE’s supervision. Mother trainers visited each village two days prior to the interviews to explain the 24-hour recall methodology. Plates and cups were distributed during the training to foster individual eating and therefore to increase the accuracy of individual reporting; to familiarize them with the picture charts; and to emphasize the importance of not altering their eating habits.

    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

    International Institute of Tropical Agriculture (IITA); HarvestPlus, International Food Policy Research Institute (IFPRI). 2015. Dietary intakes, vitamin A, and iron status of women of childbearing age and children 6-59 months of age from Akwa Ibom state in Nigeria. Washington, DC: IFPRI [dataset]. https://doi.org/10.7910/DVN/29604. Harvard Dataverse. Version 1.

    Contacts

    Contacts

    Metadata production

    DDI Document ID

    DDI_NGA_2011_CIVASWPCAI_v01_EN_M_v01_A_OCS_FAO
    Producers
    Name Affiliation Role
    Office of Chief Statistician Food and Agriculture Organization Metadata producer

    Metadata version

    DDI Document version

    NGA_2011_CIVASWPCAI_v01_EN_M_v01_A_OCS_v01
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