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
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.
Sub-national coverage, rural to moderately-urbanized areas.
Producers and sponsors
International Institute of Tropical Agriculture (IITA)
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.
No surveys weight were used in this survey.
Dates of Data Collection
Data Collection Mode
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.
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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.