The study estimated price elasticities for different food groups in urban Ethiopia using household survey data. They found that most food groups have inelastic demand, meaning people don't change their buying habits much when prices change. Only a few food items showed significant price elasticity, indicating how much demand changes with price. The study also found that some food items are substitutes or complements to each other. The researchers compared their results with actual market prices and found them to be consistent with findings from other studies.