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journal article
The effects of income on demand for food in poor countries: are our food consumption databases giving us reliable estimates?
Cross-section estimates of income elasticities for food staples in the aggregate based on quantity information from household food expenditure surveys are often in the 0.3 0.6 range.
journal article
Are estimates of calorie-income elasticities too high? a recalibration of the plausible range
The wide range of calorie-income elasticities in the literature results, in large part, from the particular calorie and income variables used for estimation.