"Variable Name","Variable ID","Variable Description",Version,"dbGaP Mapping" PX030202_Alcohol_First_Use_Age,PX030202010000,"Think about the first time you had a drink of an alcoholic beverage. How old were you the first time you had a drink of an alcoholic beverage? Please do not include any time when you only had a sip or two from a drink.",0,https://www.phenxtoolkit.org/protocols/view/30202