We use detailed consumption data of a nationally representative household survey in India (NSSO, 2000), which comprises 120,000 households and registered the consumption of about 140 different food items. Based on this
consumption data and food composition tables we calculate the VA intake of each household expressed in
micrograms (lg). 6 We then regress variables for the households’ composition (age and gender) on VA intakes and use the estimated coefficients to derive adult equivalent weights. These weights allow us to impute individual VA intakes from overall household consumption. This way we also take into account that children eat less rice and other foodstuffs than
grown-ups, which is important for the impact analysis. If current VA intake for an individual,
VAIold, is lower than the estimated average
requirement (EAR) for the particular target
group, 7 there is an ‘‘intake gap,’’ that is, the
individual can be expected to suffer from
VAD. The bigger the intake gap, the more severe
the deficiency, and the more likely adverse
health outcomes will occur
.
We use detailed consumption data of a nationally representative household survey in India (NSSO, 2000), which comprises 120,000 households and registered the consumption of about 140 different food items. Based on thisconsumption data and food composition tables we calculate the VA intake of each household expressed inmicrograms (lg). 6 We then regress variables for the households’ composition (age and gender) on VA intakes and use the estimated coefficients to derive adult equivalent weights. These weights allow us to impute individual VA intakes from overall household consumption. This way we also take into account that children eat less rice and other foodstuffs thangrown-ups, which is important for the impact analysis. If current VA intake for an individual,VAIold, is lower than the estimated averagerequirement (EAR) for the particular targetgroup, 7 there is an ‘‘intake gap,’’ that is, theindividual can be expected to suffer fromVAD. The bigger the intake gap, the more severethe deficiency, and the more likely adversehealth outcomes will occur.
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