BRFSS Annual Survey Data

	Would you like to use or cite BRFSS data? States conducting surveillance, by year.

Survey Data and Documentation

2011 Survey Data

Survey Data Information

The 2011 BRFSS data reflects a change in weighting methodology (raking) and the addition of cell phone only respondents. The aggregate BRFSS combined landline and cell phone dataset is built from the landline and cell phone data submitted for 2011 and includes data for 50 states, the District of Columbia and Puerto Rico. There are two territories (Guam, Virgin Islands) which are not included in the initial data release because current population estimates are not available at this time. These territories will be included after the 2010 Census estimates have been released. Please note the data set naming convention and weighting variables have changed. More information about the changes to the 2011 BRFSS is available, http://www.cdc.gov/surveillancepractice/reports/brfss/brfss.html.

2011 BRFSS Overview overview_11.rtf Provides information on the background, design, data collection and processing, statistical, and analytical issues for the combined landline and cell phone data set.	146K
2011 BRFSS Codebook CODEBOOK11_LLCP.rtf Codebook for the file showing variable name, location, and frequency of values for all reporting areas combined for the combined landline and cell phone data set.	4.75MB
Calculated Variables in Data Files 2011_calculated_variables.rtf Description of calculated variables by data variable name.	2.75MB
Comparability of Data compare_11.rtf Comparability of data across reporting areas for the combined landline and cell phone data set. The BRFSS 2011 data should be considered a baseline year for data analysis and is not directly comparable to previous years of BRFSS data because of the changes in weighting methodology and the addition of the cell phone sampling frame.	159K
BRFSS Modules Used Arranged by state or by category for the combined landline and cell phone data set.	By State By Category
Summary Matrix of Calculated Variables (CV) in the 2011 Data File	Web Page
BRFSS Combined Landline and Cell Phone Weighted Response Rates by State, 2011	Web Page

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Data Files

There are 506,022 records for 2011 for the combined landline and cell phone data set. More information on participation is available in the states conducting surveillance, by year table. The data files are provided in ASCII and SAS Transport formats.

2011 BRFSS Data (ASCII) Data released August 2012 This file for the combined landline and cell phone data set is in ASCII format. It has a fixed record length of 1518 positions.	81.3MB
2011 BRFSS Data (SAS Transport Format) Data released August 2012 This file for the combined landline and cell phone data set was exported from SAS V8.2 in the XPT transport format. This file contains 450 variables. This format can be imported into SPSS or STATA. Please note: some of the variable labels get truncated in the process of converting to the XPT format so they may be slightly different from what is on the SASOUT11.SAS program.	128.9MB
Variable Layout Format information on variable name by column position.	142K
2011 BRFSS Landline Data The BRFSS landline data sets contain the data from the states which conducted used optional modules in 2011 only on their landline survey.	Web Page

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SAS Resources

The following files are included for use with SAS software developed by SAS Institute, Inc. The SAS files are programs that can be read using any text editor. Save SAS files as plain text files.

format11.sas SAS for Windows program used to generate the 2011 format library.	187K
formats11.sas7bcat Format library used with the 2011 BRFSS SAS Data File.	533K
SASOUT11_LLCP.SAS SAS for Windows program to convert the ASCII file into a SAS dataset.	37K
transprt.sas SAS for Windows program to convert the XPT (SAS Transport) file into a SAS dataset.	4K
formas11.sas SAS for Windows format assignment statements.	13K

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File Formats

A word about file formats: The BRFSS Survey Data and documentation are available in several different file formats. Each available format is described below. Rich Text Format File (RTF). This format contains plain text and allows for basic formatting. Use a word processor to view and edit these files. Zip Archive File (ZIP). The zip format contains one or more files within it and is compressed to minimize the file's size. Use any zip utility to unzip these archives. SAS Instruction File (SAS). This format contains plain text which can be edited with a text editor. The instructions are intended for statistical analysis software developed by SAS Institute, Inc. SAS Version 8 Catalog File (SAS7BCAT). This format requires the use of statistical analysis software developed by SAS Institute, Inc. SAS Version 8 Datasets File (SAS7BDAT). This format requires the use of statistical analysis software developed by SAS Institute, Inc. IBM SPSS Version 14. This format requires the use of SPSS statistical analysis software developed by the IBM Corporation. SAS Transport File (XPT). This format allows data sets created by the SAS software to be imported directly into other statistical software such as Stata or SPSS. Portable Document Format File (PDF). This format allows formatting that enables full document navigation. You will need Acrobat Reader (a free application) to view and print this document. Plain Text File (TXT). This format contains simple text. Use any text editor to view and edit these files. CSV Instruction File (CSV). This format is a comma-delimited text file which can be imported by most analysis software.

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Available Survey Data
2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998
1997 | 1996 | 1995 | 1994 | 1993 | 1992 | 1991 | 1990 | 1989 | 1988 | 1987 | 1986 | 1985 | 1984

	Using BRFSS Data & Information
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Page last reviewed: 08/06/2012
Page last updated: 08/06/2012

United States Department of Health and Human Services
Centers for Disease Control and Prevention
Office of Surveillance, Epidemiology, and Laboratory Services
Public Health Surveillance and Informatics Program Office (proposed)

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