calculated quinine drink intake volume combined water and quinine-water intake to total water only intake ratio 2013-08-12T17:23:13Z A calculated measurement in which the entire volume of drink consumed during a specified period when that drink consists of both water with no additives and water with added quinine, is divided by the entire volume of drink consumed during a separate but equivalent period when that drink consists only of water with no additives, and the result is presented as a ratio, fraction, quotient or percentage. The volume of drink is the size of the three dimensional space occupied by a liquid that is brought into the mouth and swallowed to quench thirst and/or for nourishment. Quinine-water is quinine, a bitter alkaloid of cinchona that has antimalarial, analgesic, antipyretic, mild oxytocic, cardiac depressant, and sclerosing properties and that decreases the excitability of the motor end plate, dissolved at a specified concentration in water, the clear, colorless, odorless, tasteless liquid each molecule of which contains one atom of oxygen and two atoms of hydrogen (H2O). CMO:0001770 JSmith clinical_measurement_ontology quinine index total water plus quinine-water intake to total water only intake ratio