How accurate are household spoons in drug administration?

The type of household spoons or measuring devices used by 630 mothers in Kuwait when administering drugs to children was determined. Only a very small percentage of mothers used calibrated measuring devices. The rest used household spoons: 99% in the case of those measuring out teaspoonfuls and 92.5% of those measuring out tablespoonfuls. The capacity of the household spoons used was found to range from 2.5 to 5.0 ml for teaspoons and 7.0 to 15.0 ml for tablespoons. Of the mothers using household spoons, 93.5% used a teaspoon with a capacity of