National Health and Nutrition Examination Survey

August 2021-August 2023 Examination Variable List

« Return to NHANES August 2021-August 2023 Examination Data

Variable NameVariable DescriptionData File NameData File DescriptionBegin YearEndYearComponentUse Constraints
BMDBMICBMI Category - Children/YouthBMX_LBody Measures 20212023ExaminationNone
BMDSTATSBody Measures Component status CodeBMX_LBody Measures 20212023ExaminationNone
BMIARMCArm Circumference CommentBMX_LBody Measures 20212023ExaminationNone
BMIARMLUpper Arm Length CommentBMX_LBody Measures 20212023ExaminationNone
BMIHEADHead Circumference CommentBMX_LBody Measures 20212023ExaminationNone
BMIHIPHip Circumference CommentBMX_LBody Measures 20212023ExaminationNone
BMIHTStanding Height CommentBMX_LBody Measures 20212023ExaminationNone
BMILEGUpper Leg Length CommentBMX_LBody Measures 20212023ExaminationNone
BMIRECUMRecumbent Length CommentBMX_LBody Measures 20212023ExaminationNone
BMIWAISTWaist Circumference CommentBMX_LBody Measures 20212023ExaminationNone
BMIWTWeight CommentBMX_LBody Measures 20212023ExaminationNone
BMXARMCArm Circumference (cm)BMX_LBody Measures 20212023ExaminationNone
BMXARMLUpper Arm Length (cm)BMX_LBody Measures 20212023ExaminationNone
BMXBMIBody Mass Index (kg/m**2)BMX_LBody Measures 20212023ExaminationNone
BMXHEADHead Circumference (cm)BMX_LBody Measures 20212023ExaminationNone
BMXHIPHip Circumference (cm)BMX_LBody Measures 20212023ExaminationNone
BMXHTStanding Height (cm)BMX_LBody Measures 20212023ExaminationNone
BMXLEGUpper Leg Length (cm)BMX_LBody Measures 20212023ExaminationNone
BMXRECUMRecumbent Length (cm)BMX_LBody Measures 20212023ExaminationNone
BMXWAISTWaist Circumference (cm)BMX_LBody Measures 20212023ExaminationNone
BMXWTWeight (kg)BMX_LBody Measures 20212023ExaminationNone
SEQNRespondent sequence number.BMX_LBody Measures 20212023ExaminationNone
BPAOARMArm selected - oscillometricBPXO_LBlood Pressure - Oscillometric Measurements 20212023ExaminationNone
BPAOCSZMid arm circumference (cm) cuffing parameters - oscillometricBPXO_LBlood Pressure - Oscillometric Measurements 20212023ExaminationNone
BPXODI1Diastolic - 1st oscillometric readingBPXO_LBlood Pressure - Oscillometric Measurements 20212023ExaminationNone
BPXODI2Diastolic - 2nd oscillometric readingBPXO_LBlood Pressure - Oscillometric Measurements 20212023ExaminationNone
BPXODI3Diastolic - 3rd oscillometric readingBPXO_LBlood Pressure - Oscillometric Measurements 20212023ExaminationNone
BPXOPLS1Pulse - 1st oscillometric readingBPXO_LBlood Pressure - Oscillometric Measurements 20212023ExaminationNone
BPXOPLS2Pulse - 2nd oscillometric readingBPXO_LBlood Pressure - Oscillometric Measurements 20212023ExaminationNone
BPXOPLS3Pulse - 3rd oscillometric readingBPXO_LBlood Pressure - Oscillometric Measurements 20212023ExaminationNone
BPXOSY1Systolic - 1st oscillometric readingBPXO_LBlood Pressure - Oscillometric Measurements 20212023ExaminationNone
BPXOSY2Systolic - 2nd oscillometric readingBPXO_LBlood Pressure - Oscillometric Measurements 20212023ExaminationNone
BPXOSY3Systolic - 3rd oscillometric readingBPXO_LBlood Pressure - Oscillometric Measurements 20212023ExaminationNone
SEQNRespondent sequence number.BPXO_LBlood Pressure - Oscillometric Measurements 20212023ExaminationNone
LUANMTGPTotal number of measures attempted (using final wand).LUX_LLiver Ultrasound Transient Elastography 20212023ExaminationNone
LUANMVGPTotal number of complete measures retained (using final wand).LUX_LLiver Ultrasound Transient Elastography 20212023ExaminationNone
LUAPNMEExam wand type.LUX_LLiver Ultrasound Transient Elastography 20212023ExaminationNone
LUARXINReason ineligible.LUX_LLiver Ultrasound Transient Elastography 20212023ExaminationNone
LUARXNCReason for partial exam.LUX_LLiver Ultrasound Transient Elastography 20212023ExaminationNone
LUARXNDReason exam not done.LUX_LLiver Ultrasound Transient Elastography 20212023ExaminationNone
LUAXSTATElastography exam status.LUX_LLiver Ultrasound Transient Elastography 20212023ExaminationNone
LUXCAPMMedian controlled attenuated parameter (CAP). This indicator is presented as a whole number (e.g., XXX), and the units for this measure are decibels per meter (dB/m).LUX_LLiver Ultrasound Transient Elastography 20212023ExaminationNone
LUXCPIQRControlled attenuated parameter (CAP) interquartile range (IQRc) of final CAP measures. This indicator is presented as a whole number (e.g., XX).LUX_LLiver Ultrasound Transient Elastography 20212023ExaminationNone
LUXSIQRStiffness (E) interquartile range (IQRe) of final stiffness measures. This indicator is presented with one digit to the right of the decimal (e.g., XX.X).LUX_LLiver Ultrasound Transient Elastography 20212023ExaminationNone
LUXSIQRMRatio of the stiffness IQRe / median E stiffness value. This indicator is presented as a percent with one digit to the right of the decimal (e.g., XX.X%).LUX_LLiver Ultrasound Transient Elastography 20212023ExaminationNone
LUXSMEDMedian liver stiffness (E). This indicator is presented with one digit to the right of the decimal ratio (e.g. XX.X), and the units for this measure are kilopascals (kPa).LUX_LLiver Ultrasound Transient Elastography 20212023ExaminationNone
SEQNRespondent sequence number.LUX_LLiver Ultrasound Transient Elastography 20212023ExaminationNone
BAARFC11MRT cond. 1, trial 1, reason stoppedBAX_LBalance 20212023ExaminationNone
BAARFC12MRT cond. 1, trial 2, reason stoppedBAX_LBalance 20212023ExaminationNone
BAARFC21MRT cond. 2, trial 1, reason stoppedBAX_LBalance 20212023ExaminationNone
BAARFC22MRT cond. 2, trial 2, reason stoppedBAX_LBalance 20212023ExaminationNone
BAARFC31MRT cond. 3, trial 1, reason stoppedBAX_LBalance 20212023ExaminationNone
BAARFC32MRT cond. 3, trial 2, reason stoppedBAX_LBalance 20212023ExaminationNone
BAARFC41MRT cond. 4, trial 1, reason stoppedBAX_LBalance 20212023ExaminationNone
BAARFC42MRT cond. 4, trial 2, reason stoppedBAX_LBalance 20212023ExaminationNone
BAARFC51MRT cond. 5, trial 1, reason stoppedBAX_LBalance 20212023ExaminationNone
BAARFC52MRT cond. 5, trial 2, reason stoppedBAX_LBalance 20212023ExaminationNone
BAQ110Can stand on your own?BAX_LBalance 20212023ExaminationNone
BAQ121Are you currently wearing a leg brace?BAX_LBalance 20212023ExaminationNone
BAQ125Injury to foot, leg, or hipBAX_LBalance 20212023ExaminationNone
BAQ132Problems with dizzy, past 24 hoursBAX_LBalance 20212023ExaminationNone
BAQ140Last 12 months, fallen due to dizzinessBAX_LBalance 20212023ExaminationNone
BAQ150Do you have neck pain now?BAX_LBalance 20212023ExaminationNone
BAQ160Have you ever had surgery on your neck?BAX_LBalance 20212023ExaminationNone
BAQ170Neck problem lasted more than 6 weeksBAX_LBalance 20212023ExaminationNone
BAQ173Are you okay to begin this balance test?BAX_LBalance 20212023ExaminationNone
BAQ201Can you move head 30 degrees left/right?BAX_LBalance 20212023ExaminationNone
BAX5STATEligibility for Condition 5BAX_LBalance 20212023ExaminationNone
BAXMSTATMRT exam statusBAX_LBalance 20212023ExaminationNone
BAXPF11MRT cond. 1, trial 1, eyes openBAX_LBalance 20212023ExaminationNone
BAXPF12MRT cond. 1, trial 2, eyes openBAX_LBalance 20212023ExaminationNone
BAXPF21MRT cond. 2, trial 1, eyes closedBAX_LBalance 20212023ExaminationNone
BAXPF22MRT cond. 2, trial 2, eyes closedBAX_LBalance 20212023ExaminationNone
BAXPF31MRT cond. 3, trial 1, eyes openBAX_LBalance 20212023ExaminationNone
BAXPF32MRT cond. 3, trial 2, eyes openBAX_LBalance 20212023ExaminationNone
BAXPF41MRT cond. 4, trial 1, eyes closedBAX_LBalance 20212023ExaminationNone
BAXPF42MRT cond. 4, trial 2, eyes closedBAX_LBalance 20212023ExaminationNone
BAXPF51MRT cond. 5, trial 1, eyes closedBAX_LBalance 20212023ExaminationNone
BAXPF52MRT cond. 5, trial 2, eyes closedBAX_LBalance 20212023ExaminationNone
BAXRXNCReason for partial MRT examBAX_LBalance 20212023ExaminationNone
BAXRXNDReason for not done MRT examBAX_LBalance 20212023ExaminationNone
BAXTC11MRT cond. 1, trial 1, timeBAX_LBalance 20212023ExaminationNone
BAXTC12MRT cond. 1, trial 2, timeBAX_LBalance 20212023ExaminationNone
BAXTC21MRT cond. 2, trial 1, timeBAX_LBalance 20212023ExaminationNone
BAXTC22MRT cond. 2, trial 2, timeBAX_LBalance 20212023ExaminationNone
BAXTC31MRT cond. 3, trial 1, timeBAX_LBalance 20212023ExaminationNone
BAXTC32MRT cond. 3, trial 2, timeBAX_LBalance 20212023ExaminationNone
BAXTC41MRT cond. 4, trial 1, timeBAX_LBalance 20212023ExaminationNone
BAXTC42MRT cond. 4, trial 2, timeBAX_LBalance 20212023ExaminationNone
BAXTC51MRT cond. 5, trial 1, timeBAX_LBalance 20212023ExaminationNone
BAXTC52MRT cond. 5, trial 2, timeBAX_LBalance 20212023ExaminationNone
SEQNRespondent sequence number.BAX_LBalance 20212023ExaminationNone