2018 BRFSS Survey Data and Documentation
The 2018 BRFSS data continue to reflect the changes initially made in 2011 for weighting methodology (raking) and adding cell-phone-only respondents. The aggregate BRFSS combined landline and cell phone data set is built from the landline and cell phone data submitted for 2018 and includes data for 50 states, the District of Columbia, Guam, and Puerto Rico.
2018 BRFSS Overview CDC pdf icon[PDF – 298 KB]
Provides information on the background, design, data collection and processing, and the statistical and analytical issues for the combined landline and cell phone data set.
2018 BRFSS Codebook CDC pdf icon[PDF – 10 MB]
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.
Complex Sampling Weights and Preparing Module Data for Analysis CDC pdf icon[PDF – 564 KB]
An explanation of the need to use complex sampling weights and instructions for preparing a module data set for analysis.
Comparability of Data CDC pdf icon[PDF – 178 KB]
Comparability of data across reporting areas for the combined landline and cell phone data set. The BRFSS 2018 data is not directly comparable to years of BRFSS data before 2011 because of the changes in weighting methodology and the addition of the cell phone sampling frame.
Arranged by state or by category for the combined landline and cell phone data set.
There are 437,436 records for 2018. 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.
2018 BRFSS Data (ASCII) [ZIP – 66.2 MB]
This file for the combined landline and cell phone data set is in ASCII format. It has a fixed record length of 2033 positions.
2018 BRFSS Data (SAS Transport Format) [ZIP – 101 MB]
This file for the combined landline and cell phone data set was exported from SAS V9.3 in the XPT transport format. This file contains 275 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 SASOUT18.SAS program.
Format information on variable name by column position.
The Combined Landline and Cellular Telephone Survey Multiple Questionnaire Version Data–includes Optional Modules
The combined landline and cellular telephone multiple version questionnaire data sets contain the data from the states which conducted more than one version of their landline and cellular telephone survey questionnaires and used optional modules in 2018.
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.
Format18.sas CDC sas icon[SAS – 685 KB]
SAS for Windows program used to generate the 2018 format library.
Formats18 [SAS7BCAT Direct Download – 493 KB] Format library used with the 2018 BRFSS SAS Data File in 32 bit SAS.
Formats18 [SAS7BCAT Direct Download – 493 KB] Format library used with the 2018 BRFSS SAS Data File in 64 bit SAS.
SASOUT18_LLCP.SAS [SAS – 34 KB]
SAS for Windows program to convert the ASCII file into a SAS dataset.