CDC – BRFSS – 2021 BRFSS Asthma Call-back Survey (ACBS)

2021 ACBS History and Analysis Guidance [PDF – 425 KB]
Provides information on the background, design, data collection and processing, statistical, and analytical issues for the BRFSS Asthma Call-back Survey (ACBS) for 2021.

2021 ACBS Adult Codebook [ZIP – 74 KB]
Codebook for the ACBS Adult data file showing variable names and frequency of values for variables for all reporting areas combined. Variables from the BRFSS interview are included on each ACBS record, but are not included in this codebook. For information on BRFSS variables, the 2021 BRFSS Codebook should be referenced.

2021 ACBS Child Codebook [ZIP – 59 KB]
Codebook for the ACBS Child data file showing variable names and frequency of values for variables for all reporting areas combined. Variables from the BRFSS interview are included on each ACBS record, but are not included in this codebook. For information on BRFSS variables, the 2021 BRFSS Codebook should be referenced.

2021 ACBS ADULT Questionnaire [PDF – 1,015 KB]
Questionnaire for the ACBS Adult data file showing variable names.

2021 ACBS CHILD Questionnaire [PDF – 684 KB]
Questionnaire for the ACBS Child data file showing variable names.

2021 ACBS Summary Data Quality Report [PDF – 2 MB]
Procedures for interview disposition and response rates for the BRFSS Asthma Call-Back Survey (ACBS) for 2021.

In 2021 adult landline-cell phone combined data file there are 13,673 records from 30 states. In the 2021 child landline-cell phone combined data file there are 850 records from 09 states.  More information on state participation is available in the ACBS History and Analysis Guidance document. The data files are provided in SAS and SPSS formats.

2021 ACBS Adult Data SAS [ZIP – 6 MB]
Data updated: November 30, 2023.
This file contains 1493 total variables including both ACBS and BRFSS variables. This format is a SAS V9.4 data file.

2021 ACBS Child Data SAS [ZIP – 604 KB]
Data updated: November 30, 2023.
This file contains 1397 total variables including both ACBS and BRFSS variables. This format is a SAS V9.4 data file.

2021 ACBS Adult Data SPSS [ZIP – 4 MB]
Data updated: December 01, 2023.
This file contains 1493 total variables including both ACBS and BRFSS variables. This format is a SPSS V20 data file.

2021 ACBS Child Data SPSS [ZIP – 403 KB]
Data updated: December 01, 2023.
This file contains 1397 total variables including both ACBS and BRFSS variables. This format is a SPSS V20 data file.

2021 ACBS Formats, Labels and SAS Sample Code [ZIP – 66 KB]
Data updated September 18, 2023.
This file contains both ACBS Adults and Children Formats. This format is a SAS V9.4 data file.

2021 ACBS Formats, SPSS [ZIP – 27 KB]
Data updated November 12, 2023.
This file contains both ACBS Adults and Children Formats. This format is a SPSS V20 data file.