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"Variable Name","Variable ID","Variable Description",Version,"dbGaP Mapping" PX030703_Age_FirstCigarette_Adult_First_Time,PX030703030000,"You said that you never smoked regularly. How old were you the first time you smoked part or all of a cigarette?",0,https://www.phenxtoolkit.org/protocols/view/30703 PX030703_Age_FirstCigarette_Adult_Hundred,PX030703010000,"Have you smoked at least 100 cigarettes if your entire life?",0,https://www.phenxtoolkit.org/protocols/view/30703 PX030703_Age_FirstCigarette_Adult_SmokeRegularly,PX030703020100,"How old were you when you first started smoking cigarettes FAIRLY REGULARLY?",0,https://www.phenxtoolkit.org/protocols/view/30703 PX030703_Age_FirstCigarette_Adult_SmokeRegularly_Coded,PX030703020200,"How old were you when you first started smoking cigarettes FAIRLY REGULARLY?",0,https://www.phenxtoolkit.org/protocols/view/30703