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"Variable Name","Variable ID","Variable Description",Version,"dbGaP Mapping" PX730501_Cigarettes_Average_Length,PX730501030000,"Ten cigarettes, laid mouth to butt, are placed in a Cerulean cd2 express or Borgwaldt S10. The total length of the ten cigarettes is determined. The filters from each cigarette are removed, and the total length of ten filters laid end to end is deter",0,https://www.phenxtoolkit.org/protocols/view/730501 PX730501_Cigarette_Averageof20_Circumference,PX730501040000,"A Cerulean cd2 express or Borgwaldt S10 is used for the circumference determination. Samples consist of 20 cigarettes, with each cigarette being tested individually. The AHL transports individual cigarettes to the testing station. The second module d",0,https://www.phenxtoolkit.org/protocols/view/730501 PX730501_FilterType_CelluloseAcetate_Paper_Cigarette,PX730501080000,"Filter type is determined through visual or chemical techniques. After outer papers are removed, a visual examination is conducted. If a visual determination cannot be made, the sample is placed in acetone or sulfuric acid. Cellulose acetate dissolve",0,https://www.phenxtoolkit.org/protocols/view/730501 PX730501_FilterVentilation_Total_AirFlow_CigaretteCigar,PX730501090000,"Ventilation is the percentage of total air flow drawn through the sample via the sides of the filter generally entering through perforations in the cigarette tipping paper. The Borgwaldt PV-10 is used to perform the measurement. Results represent the",0,https://www.phenxtoolkit.org/protocols/view/730501 PX730501_Ten_Cigarettes_Total_Length_WithFilters,PX730501010000,"Ten cigarettes, laid mouth to butt, are placed in a Cerulean cd2 express or Borgwaldt S10. The total length of the ten cigarettes is determined. The filters from each cigarette are removed, and the total length of ten filters laid end to end is deter",0,https://www.phenxtoolkit.org/protocols/view/730501 PX730501_Ten_Cigarettes_Total_Length_WithoutFilters,PX730501020000,"Ten cigarettes, laid mouth to butt, are placed in a Cerulean cd2 express or Borgwaldt S10. The total length of the ten cigarettes is determined. The filters from each cigarette are removed, and the total length of ten filters laid end to end is deter",0,https://www.phenxtoolkit.org/protocols/view/730501 PX730501_TobaccoWeight_15Cigarettes_Composite_WeightTotal,PX730501050000,"Tobacco weight is determined using an indirect method. A group of 15 cigarettes is weighed and the composite weight recorded. The paper and filters of the corresponding 15 cigarettes are then removed and weighed and the composite weight recorded. The",0,https://www.phenxtoolkit.org/protocols/view/730501 PX730501_TobaccoWeight_15Cigarettes_CompositWeight_PapersFiltersOnly,PX730501060000,"Tobacco weight is determined using an indirect method. A group of 15 cigarettes is weighed and the composite weight recorded. The paper and filters of the corresponding 15 cigarettes are then removed and weighed and the composite weight recorded. The",0,https://www.phenxtoolkit.org/protocols/view/730501 PX730501_TobaccoWeight_Average_Tobacco_Weight_PerCigarette,PX730501070000,"Tobacco weight is determined using an indirect method. A group of 15 cigarettes is weighed and the composite weight recorded. The paper and filters of the corresponding 15 cigarettes are then removed and weighed and the composite weight recorded. The",0,https://www.phenxtoolkit.org/protocols/view/730501