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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.

! Deadlines for Proposals for 2019-20 Content [PDF - 80 KB]

 

April 2016

Data Release

 

March 2016

Publications

Data Release

Data Release - Limited Access Data

Updated Data

The 24-Hour Urine Collection Data Processing and laboratory data files have been updated. The sample size and appropriate sample weights were revised and two variance unit variables were added to all 24-Hour Urine Collection data files (UR1_H_R, UR2_H_R, U1LT_H_R, U2LT_H_R, HULT_H_R, U1IO_H_R, U2IO_H_R, U1KM_H_R, U2KM_H_R, HUKM_H_R).

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.

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

 

January 2016

Announcements

Data Release

Data Release - Limited Access Data

Updated Data

In the updated DXXFRX_H file the FRAX scores for participants with missing femur neck BMD values were set as missing. This was done because we did not have sufficient information to define secondary osteoporosis, which is one of the risk factors used in FRAX. However, if femur neck BMD is available, then it is not necessary to include secondary osteoporosis in the FRAX model.

Withdrawn Data

The urine VOC metabolites dataset from NHANES 2005-2006 has been withdrawn so it can be updated to correct for systematic bias to several analytes. An updated and unbiased dataset will soon be released for urine VOC metabolites from NHANES 2005-2006.

December 2015

Publications
Data Release

 

November 2015

Publications
Data Release

 

October 2015

Publications
Announcements
Data Release - 2013-2014
Data Release - Other Cycles
Data Release - Limited Access
Updated Data

Seroprevalence of Antibody to Influenza A (H3N2) Variant Virus (SSIF_F_R 2009-2010) was updated by adding new data to the file.

The data is being re-released due to the incorrect unit of LBXTT4. The unit of LBXTT4 should be ug/dL instead of ug/mL.

New NHANES 2007-2010 serum vitamin D data (total 25-Hydroxyvitamin D, 25-Hydroxyvitamin D2, 25-Hydroxyvitamin D3 and the C3 epimer of 25-Hydroxyvitamin D3) are being released. The vitamin D data for 2007-2010 was directly measured by a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method that was traceable to NIST vitamin D reference materials. In addition, 25-hydroxyvitamin D data from NHANES III (1988-1994) and NHANES 2001-2006 that are equivalent 25-hydroxyvitamin D measurements from the standardized LC-MS/MS method (as estimated by regression) are also being released. Please see the Analytical Note for 25-Hydroxyvitamin D Data Analysis using NHANES III (1988-1994), NHANES 2001-2006, and NHANES 2007-2010 (October 2015) 

 

September 2015

Publications
New
Updated

A derived variable, BMDAVSAD (Average Sagittal Abdominal Diameter) was added into the data file. The SAS algorithm to calculate BMDAVSAD was updated in the documentation.

 

August 2015

Publications
New

 

July 2015

Publications
New
Limited Access Documentation

 

June 2015

Updated

Ophthalmology – Retinal Imaging files were updated to include additional data associated with glaucoma. In 2012, retinal images of participants with a cup-to-disc greater than or equal to 0.6 were re-graded with attention to features relevant to glaucoma.

 

May 2015

Publications
New
Limited Access Documentation
Updated

DXA Spine files were updated to include the additional Trabecular Bone Score (TBS) variables. TBS is an indirect measure of the microarchitecture of the trabeculae, or lattice structures, that compose the trabecular (spongy) bone in the lumbar spine.

Questionnaire data files for smoking - cigarette use (years 2007-8, 2009-10, 2011-12) have been updated to correct errors for the tar, nicotine and carbon monoxide content values. The variables SMD100TR, SMD100NI and SMD100CO are part of the cigarette brand data in these files. Approximately 17% of the records that previously had numeric values for the three variables, now have missing values.

 

March 2015

Publications
New
Limited Access Documentation

 

February 2015

Publications
New
Updated

The following components are updated to provide more detailed information on HCV genotype:

The following components are updated by adding additional information to the documentation:

 

January 2015

Publications
New
Limited Access Documentation
Updated
  • Demographic Variables and Sample Weights (DEMO_G 2011-2012)
    The demographics file was updated to include additional variables for household and family sizes, household composition (i.e., the number of children aged 5 years or younger, children aged 6-17 years, and adults aged 60+ in the household), and demographic information about the household reference person.
  • Tuberculosis (TBX_G 2011-2012)
    This file is being re-published so that the Tuberculin Skin Test (TST) induration data from 1999-2000 and 2011-2012 are comparable. In 1999-2000, the mean TST results and PPD-B TST results of up to three readers were published for each survey participant. The initial release of the 2011-2012 data contained a single TST result for each survey participant. The updated 2011-2012 release contains the mean TST results of up to three readers for each survey participant. In both the 1999-2000 and updated 2011-2012 datasets, if only one TST result was recorded for a survey participant, the single result is published. PPD-B TST tests were not included in the 2011-2012 study.

 

December 2014

Publications
New
Updated

The following files were updated to include calculations for iodine:

 

November 2014

Publications
New

 

October 2014

Publications
Updated

The following files with corrected subsample weights have been reposted.

 

September 2014

Publications
New
Updated
  • Hepatitis A (HEPA_E 2007-2008)
    Hepatitis A (HEPA_E) has been updated to add data for SPs 20 year and older.

 

The original pooled-sample weight created for the following laboratory files released in July 2013 did not accurately take into account the new sample design for this NHANES survey cycle and it was not correctly stratified to the U.S. population total. The new released files contain the corrected sample weight (WTSMSMPA).The corrected sample weight was created so that analyses using race and Hispanic origin would be comparable to the three groups used in NHANES 2005-2006 (non-Hispanic white, non-Hispanic black and Mexican-American). Therefore, analyses of the data for ”Total Hispanics” is not appropriate. No changes or corrections were made to the lab analyte data in this new release. Any analyses of the data using the old public use data file should be repeated using the corrected sample weight on this new file.

  • Brominated Flame Retardants (BFRPOL_D 2005-2006)
  • Non-dioxin-like Polychlorinated Biphenyls and mono-ortho-substituted Polychlorinated Biphenyls (PCBPOL_D 2005-2006)
  • Organochlorine pesticides and metabolites (PSTPOL_D 2005-2006)
  • Brominated Flame Retardants (BFRPOL_E 2007-2008)
  • Non-dioxin-like Polychlorinated Biphenyls and mono-ortho-substituted Polychlorinated Biphenyls (PCBPOL_E 2007-2008)
  • Organochlorine pesticides and metabolites (PSTPOL_E 2007-2008)

 

August 2014

New
Updated
  • Occupation Questionnaire (OCQ_F 2009-2010)
    Industry and occupation group code variables have been added for the participant’s current and longest held jobs.

The following laboratory files have been withdrawn from public release because an error was discovered in the creation of sampling weights. New files with corrected weights will be released as soon as feasible.

  • Environmental Phenols (EPH_G 2011-2012)
  • Environmental Pesticides (PP_G 2011-2012)
  • Urinary Perchlorate, Urinary Nitrate, Urinary Thiocyanate (PERNT_G 2011-2012)
  • Urinary Iodine (UIO_G 2011-2012)
  • Urinary Mercury (UHG_G 2011-2012)
  • Urinary Phthalates (PHTHTE_G 2011-2012)
  • Polyaromatic Hydrocarbons (PAH_G 2011-2012)
  • Total Arsenic and Speciated Arsenics (UAS_G 2011-2012)
  • Urinary Heavy Metal (UHM_G 2011-2012)
  • Urinary Volatile Organic Compounds and Metabolites (UVOC_G 2011-2012)
  • Polyfluorinated Compounds (PFC_G 2011-2012)
  • Thyroid Profile (THYROD_G 2011-2012)
  • Serum Copper, Selenium, and Zinc (CUSEZN_G 2011-2012)

 

July 2014

Publications
New
Limited Access Documentation
Updated

 

June 2014

New
Limited Access Documentation

 

May 2014

Publications
New
Updated

These datasets have been withdrawn due to misspecification of the pooled-sample weights, and will be corrected and reposted.

  • Organochlorine pesticides and metabolites (Pooled) (2007-2008 PSTPOL_E)
  • Brominated Flame Retardants (Pooled Samples) (2007-2008 BFRPOL_E)
  • Non-dioxin-like Polychlorinated Biphenyls and mono-ortho-substituted PCBs 2007-2008 (PCBPOL_E)
  • Organochlorine pesticides and metabolites (Pooled) (2005-2006 PSTPOL_D)
  • Brominated Flame Retardants (Pooled Samples) (2005-2006 BFRPOL_D)
  • Non-dioxin-like Polychlorinated Biphenyls and mono-ortho-substituted Polychlorinated Biphenyls (Pooled Samples) (2005-2006 PCBPOL_D)
  • Polybrominated-p-dioxins (PBDDs) and dibenzofurans (PBDFs) (Pooled Samples) (2005-2006 BDOXPL_D)
  • Polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), and coplanar polychlorinated biphenyls (cPCBs) (2005-2006 DOXPOL_D)

 

April 2014

Announcements
Publications
New
Limited Access
Updated
  • Demographics (DEMO_G 2011-2012)
    The Demographics file was updated to expand the target age group of participants from 0-2 years to 0-19 years for the reported age in months at examination (RIDEXAGM) variable.
  • Oral Health - Periodontal (OHXPER_F 2009-2010)
    The Periodontal file was updated with the correct values measured at examination for variables OHX30PCL, OHX30CJL, OHX14LAA, and  OHX29LAA.
  • Unmetabolized Folic Acid (Surplus Sera) (SSFOL_B 2001-2002)
    SSFOL_B has been removed from public release to RDC release, because it is a method study, not prevalence study.

 

March 2014

Publications
New
Updated
  • Tuberculosis (TBX_G 2011-2012)
    Variable name TBQ010 has been changed to TBQ070 to be consistent with 1999-2000 release. The data values stay the same.
  • Total Testosterone (TST_G 2011-2012)
    The unit for variable LBXTST has been changed from nmol/L to ng/dL.

 

February 2014

New
Limited Access Documentation
Updated

 

January 2014

Publications
New
Updated
  • Demographic Variables and Sample Weights (DEMO_G 2011-2012)
    The Demographics file was updated to include the following household and family income related variables: INDHHIN2 (Annual household income),  INDFMIN2 (Annual family income), and INDFMPIR (Ratio of family income to poverty).

 

December 2013

Publications
New
Limited Access Documentation
Updated

 

November 2013

Publications
New
Limited Access Documentation
Updated

 

October 2013

Publications
New
Limited Access Documentation
Updated
  • Polyfluorinated Compounds (PFC_E 2007-2008)
  • Polyfluorinated Compounds (PFC_F 2009-2010)
    One of the perfluorinated standards (perfluorononanoic acid, PFNA) used for analyzing the NHANES 2007-2008(PFC_E) and 2009-2010 (PFC_F) serum samples is not 100% pure, but 82% pure. Therefore, the values for perfluorononanoic acid (LBXPFNA )  in datasets PFC_E and PFC_D were adjusted.

 

September 2013

Publications
New
2011-2012 Data Release
Other Cycles
Limited Access Documentation
Updated

 

August 2013

Publications
New
Updated

 

July 2013

New
Limited Access

 

June 2013

 
New
Updated

Laboratory mercury files for 2005-2006, 2007-2008, and 2009-2010 have been reorganized.  Total mercury variables have been relocated and some files renamed accordingly.  There are no changes to the values of any data items, and no data has been added or removed from the website.  Specifically:

Total mercury variables LBXTHG, LBDTHGSI, and LBDTHGLC have been REMOVED from the formerly-named “Blood Total Mercury and Blood Inorganic Mercury” files, and these files have been renamed  “Blood Inorganic Mercury” to reflect  the removal of total mercury (THG) variables. The file abbreviation has been changed from “THgIHg_[X]” to “IHg_[X]”. 

Total mercury variables LBXTHG, LBDTHGSI, and LBDTHGLC have been ADDED to the formerly-named “Blood Cadmium and Lead” files, and these files have been renamed “Blood Cadmium, Lead, and Total Mercury” to reflect the addition of total mercury variables.  The file abbreviation “PbCd_[X]” remains the same.

 

May 2013

 
Publications
Updated

 

April 2013

 

New
Limited Access Documenmtation
Updated

 

March 2013

 

Publications
New
Limited Access Documenmtation
Updated

 

February 2013

 

Publications
New
Updated

 

January 2013

 

Announcements
New
Updated
  • Hepatitis A (HEPA_F 2009-2010)

    The dataset of HEPA_F has been updated by adding SPs from 2 year old.

 

December 2012

 

Announcements
New

 

November 2012

 

Announcements
Publications
New

 

October 2012

 

Announcements
Publications
New

 

September 2012

 
Announcements
Publications
New
Updated

A correction factor equal to 0.872 applied to the value of 2-(N-Methyl-perfluorooctane sulfonamido) acetic acid  (MPAH) for NHANES survey periods 1999-2000, 2003-2004, 2005-2006, 2007-2008, and 2009-2010 because the analytical standard for MPAH used since 1999 was of insufficient purity.

 

August 2012

 

Announcements
Publications
New
Updated

 

July 2012

 

Publications
New
Updated
 

June 2012

 

New

 

May 2012

 

Publications
New
Updated
  • WITHDRAWN: Hemagglutination inhibition antibody titers to influenza A/ H1N1 viruses (SSH1N1_E 2007-2008)

    This dataset has been withdrawn until sample weights and additional analytic guidance can be developed.

 

April 2012

 

Publications
New
Tutorials
  • NHANES Physical Activity and Cardiovascular Fitness Data Tutorial
    NHANES has released the first course of the NHANES Physical Activity and Cardiovascular Fitness Data Tutorial. The NHANES physical activity and cardiovascular fitness data consist of study participant information obtained through the physical activity questionnaire (PAQ), the cardiovascular fitness examination (CVX), and the physical activity monitor examination (PAX). These data provide a snapshot of physical activity and cardiovascular fitness for the U.S. population. This tutorial simulates a real life experience of how to conduct an analytical project from beginning to end, with a step-by-step logical flow through typical analytic procedures. Relevant information on physical activity and cardiovascular fitness data, nuances, tips, explanations for SAS or SUDAAN programs, downloadable sample program code, and analytical guidance are organized and integrated into different modules and tasks to facilitate this learning process.
  • NHANES-CMS Linked Data Tutorial
    NHANES has released the first two courses of the NHANES-CMS Linked Data Tutorial. NHANES-CMS linked data is created by linking NHANES survey participants with claims records collected from Center for Medicare and Medicaid Services (CMS). Linkage of the NHANES survey participants with the CMS data provides the opportunity to study changes in health status, health care utilization and expenditures in the elderly, disabled, and other U.S. populations. This tutorial walks you through the steps for conducting an analytic project using the continuous NHANES-CMS linked data, with examples of common analytic applications and procedures.

 

March 2012

 

Publications
New
Limited Access Documentation
Updated

 

February 2012

 

Publications
 
New
Limited Access Documentation
Updated

 

January 2012

 

Publications
New
Limited Access Documentation
Updated
  • Complete Blood Count with 5-Part Differential in Whole Blood (CBC_F 2009-2010)
    Platelet count and RBC data have been added to CBC_F.
  • PHPYPA Urinary Phthalates (PHPYPA 1999-2000)
  • Urinary Phthalates, Phytoestrogens and PAHs (PHPYPA_B 2001-2002)
  • Urinary Phthalates (L24PH_C 2003-2004)
  • Urinary Phthalates (PHTHTE_D 2005-2006)
  • Urinary Phthalates (PHTHTE_E 2007-2008)
    NCHS recently learned that analytical standards used since 1999 and used for several metabolites were of insufficient purity. After further investigation, it was determined that a correction factor needs to be applied to each value for the 5 metabolites. These metabolites and the specific correction factor for each are as follows:  Mono-ethyl phthalate (URXMEP), 0.66; Mono-benzyl phthalate (URXMZP), 0.72; Mono-n-octyl phthalate (URXMOP), 1.68; Mono-isononyl phthalate (URXMNP), 1.54; and Mono-cyclohexyl phthalate (URXMCP), 2.01. The correction factor should be applied to each analyte for NHANES survey periods 1999-2000, 2001-2002, 2003-2004, 2005-2006, and 2007-2008 results.  
  • Urinary Priority Pesticides (Non-Persistent Pesticide Metabolites) (LAB26PP 1999-2000)
  • Urinary Priority Pesticides (Non-Persistent Pesticide Metabolites), (L26PP_B 2001-2002)
    The pentachlorophenol (URXPCP) and 2,4-dichlorophenol (URXDCB) results for the 2 survey periods (1999-2000 and 2001-2002) were affected by an unacceptable calibration bias and these results are withdrawn. A similar calibration bias resulted in withdrawal of several chemical results for the 2 survey periods and described in documentation notes for the Urinary Priority Pesticides and Organophosphate Pesticides files (Lab26PP, L26PP_B).

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