README for “2013–2014 National Roadside Study of Alcohol and Drug Use by Drivers [Supporting Datasets]” dataset.
Office of Behavioral Safety Research (BSR), National Highway Transportation Safety Administration (NHTSA), U.S. Department of Transportation (USDOT)
2024-01-16

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LINKS TO DATASET
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A. Dataset homepage link:
       https://doi.org/10.21949/1529966 


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SUMMARY OF DATASET
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This dataset supports the conclusions of the 2013–2014 National Roadside Study of Alcohol and Drug Use by Drivers. The three report volumes -- Methodology, Drug Results, and Alcohol Results -- are available in this repository and linked to this record.
This dataset records results from 11,322 roadside surveys conducted across the United States in 2013 and 2014, as described in the Methodology volume. When possible, oral fluid and blood samples were taken and were subjected to laboratory screening and liquid chromatography-mass spectrometry (LC/MS/MS; the term MS/MS is the combination of two mass analyzers in one mass spec instrument) and gas chromatography-mass spectrometry (GC/MS) confirmation respectively for alcohol and six classes of drugs, allowing researchers to estimate a national prevalence of alcohol and other drugs in drivers. The dataset also includes information from a self-administered questionnaire, also described in the Methodology document. All drivers’ responses were completely voluntary and anonymous. Re-identification risk of study participants from this dataset is very low.
The data files are collected into a single ZIP file.




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TABLE OF CONTENTS
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A. General Information
B. Sharing/Access & Policies Information
C. Data and Related File Overview
D. Methodological Information
E. Data-Specific Information
F. Update Log





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A. GENERAL INFORMATION
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0. Title of Dataset: 
   2013–2014 National Roadside Study of Alcohol and Drug Use by Drivers [Supporting Datasets]


1. Description of Dataset:
   This dataset supports the conclusions of the 2013–2014 National Roadside Study of Alcohol and Drug Use by Drivers. The three report volumes -- Methodology, Drug Results, and Alcohol Results -- are available in this repository and linked to this record.
	This dataset records results from 11322 roadside surveys conducted across the United States in 2013 and 2014, as described in the Methodology volume. When possible, oral fluid and blood samples were taken and were subjected to laboratory screening and liquid chromatography-mass spectrometry (LC/MS/MS; the term MS/MS is the combination of two mass analyzers in one mass spec instrument) and gas chromatography-mass spectrometry (GC/MS) confirmation respectively for alcohol and six classes of drugs, allowing researchers to estimate a national prevalence of alcohol and other drugs in drivers. The dataset also includes information from a self-administered questionnaire, also described in the Methodology document. All drivers’ responses were completely voluntary and anonymous. Re-identification risk of study participants from this dataset is very low.
	The data files are collected into a single ZIP file.



2.A Dataset homepage link:
       https://doi.org/10.21949/1529966  


3. Authorship Information:
   Principal Data Creator or Data Manager Contact Information
        Name: Amy Berning
	   ORCiD: https://orcid.org/0000-0002-0614-2793
           Office of Behavioral Safety Research (BSR), National Highway Transportation Safety Administration (NHTSA), U.S. Department of Transportation
           Address: 1200 New Jersey Ave SE, Washington D.C. 20590
           Email: amy.berning@dot.gov

 
   Organizational Contact Information
        Name: National Transportation Library Data Curator
           Institution: National Transportation Library, Office of Information and Library Sciences, 
Bureau of Transportation Statistics, U.S. Department of Transportation
           Address: 1200 New Jersey Ave SE, Washington D.C. 20590
           Email: ntldatacurator@dot.gov
	   
	   

4. Date of data collection and update interval:
   Collection period: 20130601 to 20140331. No updates 


5. Geographic location of data collection: 
   United States, various locations


6. Information about funding sources that supported the collection of the data:
   DTNH22-11-C-00216




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B. SHARING/ACCESS & POLICIES INFORMATION 
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0. Recommended citation for the data: 
   U.S. Department of Transportation, National Highway Transportation Safety Administration (NHTSA),  Office of Behavioral Safety Research (BSR). (Last updated 2024-01.) 2013–2014 National Roadside Study of Alcohol and Drug Use by Drivers [Supporting Datasets]. https://doi.org/10.21949/1529966


1. Licenses/restrictions placed on the data:
   These data are in the Public Domain.


2. Was data derived from another source?:
   No


3. This dataset and its documentation were created and shared to meet the requirements enumerated in the U.S. Department of Transportation's "Plan to Increase Public Access to the Results of Federally-Funded Scientific Research" Version 1.1 <<https://doi.org/10.21949/1524190>> and guidelines suggested by the DOT Public Access website <<https://doi.org/10.21949/1503647>>, in effect and current as of January 16, 2024.
 



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C. DATA & RELATED FILE OVERVIEW
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1. File List
   A.1. Filename: NHTSA_BSR_NRS_2013_2014_Combined_csv_161025_20240116_0730.csv     
        Short description: 11,322 data records, with variables in header row. .CSV version, opens with any text editor.
	A.2. Filename: NHTSA_BSR_NRS_2013_2014_Combined_xlsx_161025_20240116_0730.xlsx     
        Short description: 11,322 data records, with variables in header row. .XLSX version, opens with Mircosoft Excel or other spreadsheet program.		
	A.3. Filename: NHTSA_BSR_NRS_2013_2014_Combined_sav_161025.zip     
        Short description: 11,322 data records. .SAV version, opens with IBM SPSS statistical software.
	A.4. Filename: NHTSA_BSR_NRS_2013_2014_Combined_sas_161025_20240116_0730.zip     
        Short description: 11,322 data records. .SAS version, opens with SAS statistical software.
	A.5. Filename: NHTSA_BSR_NRS_2013_2014_Combined_dta_161025_20240116_0730.zip     
        Short description: 11,322 data records. .DTA version, opens with Stata statistical software.
        
   B. Filename: NHTSA_BSR_NRS_2013_2014_README_20240116_0730.txt     
        Short description:        
        The README.txt file that includes human-readable information about the data, variable definitions, contact information, and other contextual information. The file you are reading now.      

   C. Filename: NHTSA_BSR_NRS_2013_2014_README_20240116_0730.pdf 
        Short description: 
        A PDF version of the README.txt file that includes human-readable information about the data, variable definitions, contact information, and other contextual information.
        
   D. Filename: NHTSA_BSR_NRS_2013_2014_METADATA_20240116_0730.json    
        Short description: 
        The machine-readable .json metadata file based on DCAT-US (Project Open Data) metadata schema v1.1.

   E. Filename: NHTSA_BSR_NRS_2013_2014_DMP_20240116_0730.txt
        Short description: 
        The human-readable data management plan associated with this dataset.  
	
   F. Filename: NHTSA_BSR_NRS_2013_2014_DMP_20240116_0730.PDF
        Short description: 
        A pdf version of the human-readable data management plan associated with this dataset.	

   G. Filename: NHTSA_BSR_NRS_2013_2014_DataDictionary.pdf       
        Short description: 
        This document defines the 975 variables collected or generated for this dataset.


2. Are there multiple versions of the dataset? No





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D. METHODOLOGICAL INFORMATION
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1. Description of methods used for collection/generation of data: 
   For Methodological information, please read the file NHTSA_BSR_NRS_2013_2014_812294_nrs_methodology_report.pdf, "2013–2014 National Roadside Study of Alcohol and Drug Use by Drivers: Methodology." This file is also available in ROSA P at https://doi.org/10.21949/1525796. 




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E. DATA-SPECIFIC INFORMATION  
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1. NHTSA_BSR_NRS_2013_2014_Combined_csv_161025_20240116_0730.csv (as well as .xlsx, .sav, .sas, and .dta formats).

A. Notes on table structure: see Data Dictionary file NHTSA_BSR_NRS_2013_2014_DataDictionary.pdf


B. Number of variables:
   975 variables


C. Number of cases/rows: 
   11,322 rows

   
D. Each row represents:
   1 NRS questionnaire interation with a licensed driver in the United States.
   

E. Data Dictionary/Variable List: [preferably in the order of appearance in the data table, reading left to right.]
 
    1. The full Data Dictionary is in file: NHTSA_BSR_NRS_2013_2014_DataDictionary.pdf
	


F. Missing data codes:
        #NULL!        See Data Dictionary 
        Empty Cell 	  See Data Dictionary




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F. CHANGE LOG / UPDATE LOG
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This NHTSA_BSR_NRS_2013_2014_README_20240116_0730.txt file was created on 2024-01-16 by Leighton L Christiansen https://orcid.org/0000-0002-0543-4268, Data Curator, leighton.christiansen@dot.gov

[Note changes or update to the readme.txt file, e.g.:]

2024-01-16: Original file created







