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What's New

! Update on NHANES Dietary Data: Focus on Collection, Release, Analytical Considerations, and Uses to Inform Public Policy.
Adv Nutr. 2016 Jan 15;7(1):121-34. doi: 10.3945/an.115.009258. Print 2016 Jan. Review.
 

February 2019

Data Release

Updated Data

2011-2012 folate and folate form datasets were updated to correct a calibration bias in the serum folic acid determination. Please refer to the analytic notes in the documentations accompanying the datasets for more details.

2007-2008 serum folate forms dataset was updated to: 1) add two comment code variables (LBDSF1LC, LBDSF2LC) documenting cases with values below lower detection limit, these variables were inadvertently omitted from original release; and 2) rename two folate form variables as “LBXSF1SI” and “LBXSF2SI” to reflect the SI unit (nmol/L) of their values, no changes were made to the actual values of these two variables.

GLU_I dataset was updated to round the LBXGLU variable to the nearest whole number.

Documentation for the Volatile Organic Compounds (VOC) datasets in three earlier cycles were updated. 2001-2002: References were added; and 2003-2004 & 2005-2006: units of measurement for MTBE and Trihalomethane analytes were corrected to pg/mL. No changes were made to any data points in these datasets.

 

January 2019

Publications

Data Release

Data Release – Limited Access Data

 

December 2018

Publications

Data Release

Withdrawn Data

The 1999-2004 SSANA datasets have been temporarily removed to review and possibly update the weighting variable.

 

November 2018

Data Release

Data Release – Limited Access Data

Updated Data

  • The documentation for the 1999-2016 Demographic Variables & Sample Weights files was updated to include information on weighted mean age for NHANES participants in the top-coded age group.
    No changes were made to any data points in these datasets.
  • Human Papillomavirus (HPV) DNA – Vaginal Swab: Digene Hybrid Capture & Roche Linear Array datasets in the 2005-2006 cycles (HPVSWR_D
    and SWR_D_R) were updated to add two variables (LBXH2RL-Hybrid Capture high risk result and
    LBXH3RL-Hybrid Capture low risk result) inadvertently omitted from the original release.
  • Laboratory method files inadvertently omitted from the original release for 2003-2012 human papillomavirus (HPV) vaginal swab and serum datasets were added.
  • The documentation for the pooled-sample environmental exposure laboratory datasets in the 2005-2006 and 2007-2008 cycles has been updated to include a Limit of Detection (LOD) table. No changes were made to any data points in these datasets.

 

October 2018

Publications

Data Release

 

September 2018

Publications

Data Release

Limited Access Data

Data documentation has been added for the Limited Access Data files below. No changes or corrections have been made to the data.

Updated Data

SSCMV_A, SSCMV_B and SSCMV_C are updated to add both CMV IgM and GMV IgG avidity.

 

July 2018

Publications

Data Release

 

June 2018

Publications

Data Release

 

May 2018

Data Release

Data Release – Limited Access Data

 

April 2018

Publications

Data Release

Updated Data

  • Urine Flow Rate (UCFLOW_F 2009-2010)
  • Urine Flow Rate (UCFLOW_G 2011-2012)
  • Urine Flow Rate (UCFLOW_H 2013-2014)
    UCFLOW_F, UCFLOW_G, and UCFLOW_H were updated to include variables that represent the time in between each urine collection.
  • Oral Glucose Tolerance Test (OGTT_H 2013-2014)
    OGTT_H was updated to correct typos in the method file. No changes were made to the dataset or codebook.
  • Plasma Fasting Glucose (GLU_H 2013-2014)
    GLU_H was updated to correct typos in the method file. No changes were made to the dataset or codebook.

 

March 2018

Data Release

Data Release – Limited Access Data

Updated Data

 

February 2018

Publications

Data Release

Data Release – Limited Access Data

Updated Data

Withdrawn Data

  • Folate – RBC (FOLATE_G 2011-2012)
    2011-2012 Folate – RBC (FOLATE_G) and Folate Forms – Serum (FOLFMS_G) were temporarily withdrawn from the NHANES website for corrections
  • Folate Forms – Serum (FOLFMS_G 2011-2012)
    2011-2012 Folate – RBC (FOLATE_G) and Folate Forms – Serum (FOLFMS_G) were temporarily withdrawn from the NHANES website for corrections.

 

January 2018

Publications

Data Release

Data Release – Limited Access Data

 

December 2017

Data Release

Data Release – Limited Access Data

Updated Data

 

October 2017

Publications

Data Release

Updated Data

 

September 2017

Data Release – 2015-2016

  • Hepatitis C: RNA (HCV-RNA) and Hepatitis C Genotype (HEPC_I 2015-2016)
    Updated September 2017. See note under Updated Data.

Data Release – Other Cycles

Data Release – Limited Access

Updated Data

  • Occupation (OCQ_G 2011-2012)
    Industry and occupation group code variables have been added for study participant’s current and longest held jobs.
  • Volatile Organic Compounds & Metabolites – Urine – Special Sample (Subsample) (UVOCS_G 2011-2012)
    The 2011-2012 Volatile Organic Compounds (VOC) and Metabolites in urine (UVOC_G and UVOCS_G) datasets have been updated to include a Special Analytic Note on bias adjustments applied to several VOC in urine metabolite analytes listed in the Analytic Notes section of the documentation files.
  • Volatile Organic Compounds & Metabolites – Urine (Surplus) (Subsample) (SSUVOC_D 2005-2006)
    The 2005-2006 Volatile Organic Compounds (VOC) and Metabolites in urine (SSUVOC_G ) (Surplus) dataset was withdrawn from the NHANES website in January 2016. These datasets are now corrected and republished on the NHANES website for immediate use. For details on adjustments applied to the dataset, see the Analytic Notes section of the documentation file.

 

August 2017

Publications

Data Release

Updated Data

  • Dermatology (DEQ_H 2013-2014)
  • Dermatology (DEQ_G 2011-2012)
  • Dermatology (DEQ_F 2009-2010)
  • Dermatology (DEQ_E_R 2007-2008)
    2007-2014 Dermatology questionnaire data (DEQ) were updated to correct coding errors in variables DED120 (time spent outside on work or school days) and DED125 (time spent outside on days not at work or at school). New codes were added to specify participants who reported not spending any time outdoors (DED120 & DED125), not working or going to school (DED120), or at work or at school 9 to 5 seven days a week (DED125). These participants were originally coded as missing in previously released versions.
  • Vitamin B12 (VITB12_H 2013-2014)
    2013-2014 Vitamin B12 has been updated to included participants aged 19 years.

 

July 2017

Data Release

Updated Data

  • Volatile Organic Compounds & Metabolites – Urine (Subsample) (UVOC_G 2011-2012)
  • Volatile Organic Compounds & Metabolites – Urine – Special Sample (Subsample) (UVOCS_G 2011-2012)
    2011-2012 Volatile Organic Compounds (VOC) and Metabolites in urine (UVOC_G and UVOCS_G) datasets were withdrawn from the NHANES website in May 2017, due to lot-to-lot variations of standard materials. These datasets are now corrected and republished on the NHANES website for immediate use. However, t,t-Muconic acid (URXMUCA) data were completely withdrawn from these datasets, due to an observed issue with the internal standard transition used for quantitation. Please see the Analytic Note in both datasets for more detailed information about the exclusion of this analyte.

Withdrawn Data

 

June 2017

Data Release

Updated Data

 

May 2017

Publications

Updated Data

  • Toxoplasma gondii Antibody – Serum (Surplus) (SSTOXO_G 2011-2012)
    The variable SSTOXAV, Toxoplasmosis IgG Avidity, is being removed from the 2011-2012 data file because this variable is related to Toxoplasmosis IgM antibody which is not being released at this time due to quality control concerns.

Withdrawn Data

 

April 2017

Publications

Data Release

Withdrawn Data

  • Polycyclic Aromatic Hydrocarbons (PAH) – Urine – Special Sample (Subsample) (PAHS_H 2013-2014)
    Polycyclic Aromatic Hydrocarbons (PAH) – Special Sample (PAHS_H) in the 2013-2014 cycle will be temporarily withdrawn due to missing samples in the dataset. The samples will be analyzed, and the dataset will be corrected and released at a later date.

 

March 2017

Publications

Data Release

Updated Data

  • Physical Activity (PAQ_H 2013-2014)
  • Physical Activity (PAQ_G 2011-2012)
  • Physical Activity (PAQ_E 2007-2008)
    The physical activity data was updated to clarify a few records where yes was originally reported for an activity, but the time given for the activity was zero minutes. The activity was set to no for these records.

 

February 2017

Data Release

Updated Data

  • Volatile Organic Compounds and Trihalomethanes/MTBE – Blood & Related Questionnaire Items (Subsample) (VOCWB_H 2013-2014)
    The volatile toxicant questionnaire items were removed from the previously released 2013-2014 Volatile Organic Compounds and Trihalomethanes/MTBE – Blood (VOCWB_H) dataset. The questionnaire data are now released in a separate dataset, Volatile Toxicant (VTQ_H), in the Questionnaire Section of the NHANES website. None of the previously released data was changed in either dataset.

 

January 2017

Publications

Data Release

 

December 2016

Data Release

Data Release – Limited Access Data

Updated Data

  • Dual-Energy X-ray Absorptiometry – Whole Body (DXX_D 2005-2006)
    The DXA whole body file was updated to include two overall imputation indicator variables that indicate whether bone (DXITOTBN) or soft tissue data (DXITOTST) were imputed for at least one body subregion.

 

November 2016

Data Release

Updated Data

  • Physical Functioning (PFQ_H 2013-2014)
    The Physical Functioning (PFQ_H) file has been updated to include participants 3 to 4 years of age and an additional question (PFQ033) on use of special equipment.
  • Volatile Organic Compounds & Metabolites – Urine (Subsample) (UVOC_G 2011-2012)
  • Volatile Organic Compounds & Metabolites – Urine – Special Sample (Subsample) (UVOCS_G 2011-2012)
    The t,t-Muconic acid (URXMUCA) data were withdrawn from the Urinary Volatile Organic Compounds datasets (UVOC_G and UVOCS_G) in the NHANES 2011-2012 cycle, due to an observed issue with the internal standard transition used for quantitation. It was determined that the internal standard quantitation scheme used was not consistent during the 2011-2012 cycle, and the data could not be recalculated, even after the issue was identified and corrected. A detailed analytical note has been included in the dataset. The documentation file and laboratory procedure manual have been updated to reflect the withdrawal of all URXMUCA data.

 

October 2016

Data Release

Data Release – Limited Access Data

Updated Data

  • Acrylamide & Glycidamide (L06AGE_C 2003-2004)
    The LOD values were corrected and the data was corrected to report out 2 decimal places.
  • Acrylamide & Glycidamide (AMDGYD_D 2005-2006)
    The LOD values were corrected in the document and the method file (SOP) was updated. No changes were made to the data.

 

September 2016

Data Release

Updated Data

  • Electrolytes – Home Urine Collection (HULT_H_R 2014)
  • Kidney Markers – Home Urine Collection (HUKM_H_R 2014)
    Electrolytes – Home Urine Collection (HULT_H_R) and Kidney Marker – Home Urine Collection (HUKM_H_R) datasets in the 2013-2014 Limited Access Data were updated to include two new variables: URDDBUHM – number of days between the day of the morning home urine collection and the first 24-hour urine collection; and URDDBUHE – number of days between the day of the evening home urine collection and the first 24-hour urine collection.
  • Herpes I and II (NH2HERPE 1976-1980)
    The Herpes I and II data has been updated to update the variable HSV1. After further review of the original methodology, all the individuals who had previously been coded as indeterminate or missing are now coded as negative.
  • Smoking – Cigarette Use (SMQ_H 2013-2014)
    The documentation and data file Smoking – Cigarette Use (SMQ_H 2013-2014) was updated to include cigarette brand and associated variables.

 

August 2016

Publications

Data Release

Data Release – Limited Access Data

Updated Data

Data documentation and/or method documents have been updated for the files below, as indicated. No changes or corrections have been made to the data.

  • Plasma Fasting Glucose and Insulin (Subsample)(GLU_G 2011-2012)
    The insulin was performed 2005-2009 using the Mercodia ELISA assay and was switched in late 2009 to a Roche chemiluminescent immunoassay performed on the Elecsys 2010 analyzer. A crossover study was performed between the two methods. To trend 1999-2012 serum insulin, a “forward” fractional polynomial regression was added to the analytic note to derive 2011-2012 Roche-equivalent insulin values from the measured Mercodia insulin values from NHANES 2005-2008. See the analytic note on “change in methods for serum insulin.”
  • Plasma Fasting Glucose and Insulin (Subsample) (GLU_F 2009-2010)
    There was a change in late 2009 from the Mercodia to the Elecsys insulin method. For 2009-2010, a new Mercodia ELISA insulin method file was added in addition to the Elecsys 2010 insulin method file. See the lab methods Insulin-Mercodia ELISA and Insulin-Elecsys 2010 Immunoassay.
  • Plasma Fasting Glucose & Insulin (Subsample) (GLU_D 2005-2006)
    The insulin was performed 2003-2004 using the Tosoh immunoenzymometric assay and was switched in 2005-2006 to a Mercodia ELISA assay. A crossover study was performed between the two methods. To trend 2003-2006 serum insulin, a “forward” linear regression was added to the analytic note to derive Mercodia-equivalent insulin values for NHANES 2005-2006 from measured Tosoh insulin values measured in 2003-2004. See the analytic note on “Insulin regression equation to compare 2005-2006 data and 2003-2004 data.”
  • Plasma Fasting Glucose, Serum C-peptide & Insulin (Subsample) (L10AM_C 2003-2004)
    The insulin was performed 1999-2002 using the Pharmacia RIA assay and was switched in 2003-2004 to a Tosoh immunoenzymometric assay. A crossover study was performed between the two methods. To trend 1999-2004 serum insulin, a “backward” linear regression was added to the analytic note to derive Pharmacia-equivalent insulin values for NHANES 1999-2002 from measured Tosoh insulin values measured in 2003-2004. See the analytic note on “Comparison of NHANES 2003-2004 to NHANES 1999-2002 Insulin Values.”

 

July 2016

Publications

Data Release

 

June 2016

Data Release

Data Release – Limited Access Data

 

May 2016

Data Release

Data Release – Limited Access Data

Updated Data

  • DEET and Metabolites (Subsample) (DEET_E 2007-2008)
    The document of DEET and Metabolites (DEET_E 2007-2008) was updated to include the method file.

 

April 2016

Data Release

 

March 2016

Publications

Data Release

Data Release – Limited Access Data

Updated Data

  • Cholesterol – Total (TCHOL_H 2013-2014)
  • HDL-Cholesterol (HDL_H 2013-2014)
    Total Cholesterol and HDL-Cholesterol are being updated to include an additional laboratory method file for each dataset, due to a change in instrumentation during the 2013-2014 cycle. The Roche/Hitachi Modular P Chemistry Analyzer method file is being added to accompany the Cobas 6000 Chemistry Analyzer method file for both datasets. Two method files will now be made available under the “Laboratory Method Files” section for total cholesterol, HDL-cholesterol, and triglyceride in the Doc File of each dataset.
  • Taste & Smell (CSQ_H 2013-2014)
    The 2013-2014 Taste and Smell questionnaire (CSQ) data file has been updated to include two audiometry variables: a history of repeated ear infections (AUQ136) and a history of ear tube placement (AUQ138).

 

February 2016

Publications

Data Release

 

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