Consumo de álcool - cálculo

Para quem quiser iniciar um trabalho de investigação em que uma das variáveis é "consumo de álcool":

Maximum daily or weekly alcohol intake, recommended by the public health authorities in several States, is usually expressed in ‘units of alcohol’, the definition of which varies from one State to another. In one Contracting State, a unit of alcohol is defined as 15 mL of pure alcohol (ethyl alcohol, ethanol), which is equivalent to one standard serving of beer, wine or spirits. If not accompanied by food, one unit of alcohol will entail a blood alcohol concentration of c. 0.2g/L in a man (70 kg) and of c. 0.3g/L in a woman (55 kg). The recommended weekly maximum intake for males is 21 units and for women 14 units.