Abstract
Using household survey data from a sample of 810 households, this paper analyses the determinants of children’s nutritional status and evaluates the impacts of improved maize varieties on child malnutrition in eastern Zambia. The paper uses an endogenous switching regression technique, combined with propensity score matching, to assess the determinants of child malnutrition and impacts of improved maize varieties on nutritional status. The study finds that child nutrition worsens with the age of the child and improves with education of household head and female household members, number of adult females in the household, and access to better sanitation. The study also finds a robust and significant impact of improved maize varieties on child malnutrition. The empirical results indicate that adoption of improved maize varieties reduces the probability of stunting by an average of about 26 %.
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Notes
Since the treatment and outcome variables are both binary, we used a probit regression model to test validity of the instrumental variables. The results from these tests are not discussed because of limited space but are available on request
A follow up survey will be conducted in 2015 where the same household who were interviewed at baseline will be interviewed.
A camp is a catchment area made up of 8 different zones consisting of villages and is headed by an agricultural camp officer. A block is made up of camps and is managed by an agricultural block officer.
An adopter in this study is defined as any farmer who planted or allocated land to at least one improved maize variety consistently for the past three years prior to the survey
Exchange rate at the time of the survey: 1US$ = ZMK5,1974
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Acknowledgments
The authors gratefully acknowledge financial support from the USAID Zambia Mission (USAID/Zambia). The household survey was conducted in collaboration with the Ministry of Agriculture and Livestock of Zambia and the Zambia Agricultural Research Institute (ZARI). We thank Bernadette Chimai of the University of Zambia who ably supervised the data collection process. We are grateful to three anonymous referees and the Editor-in-Chief of this journal for their comments on an earlier draft of the paper.
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Manda, J., Gardebroek, C., Khonje, M.G. et al. Determinants of child nutritional status in the eastern province of Zambia: the role of improved maize varieties. Food Sec. 8, 239–253 (2016). https://doi.org/10.1007/s12571-015-0541-y
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DOI: https://doi.org/10.1007/s12571-015-0541-y