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"Variable Name","Variable ID","Variable Description",Version,"dbGaP Mapping" "PX560304_Duration _Abstinence_Substance_Use_Days",PX560304010100,"When was the most recent time you used (Name of drug category)? Days",0,https://www.phenxtoolkit.org/protocols/view/560304 "PX560304_Duration _Abstinence_Substance_Use_Months",PX560304010300,"When was the most recent time you used (Name of drug category)? Months",0,https://www.phenxtoolkit.org/protocols/view/560304 "PX560304_Duration _Abstinence_Substance_Use_Weeks",PX560304010200,"When was the most recent time you used (Name of drug category)? Weeks",0,https://www.phenxtoolkit.org/protocols/view/560304 "PX560304_Duration _Abstinence_Substance_Use_Years",PX560304010400,"When was the most recent time you used (Name of drug category)? Years",0,https://www.phenxtoolkit.org/protocols/view/560304