date:May 18, 2012
In fact, the findings suggest the metric used to measure the price of food items tended to have a large effect on which foods were more expensive.
The report, Are healthy foods really more expensive? It depends on how you measure the price, was posted May 16 on the E.R.S. web site (www.ers.usda.gov).
To assure a balanced assessment, the E.R.S. study compared the prices of healthy and less healthy foods using three price metrics: the price per calorie, per edible gram and per average portion.