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National Center for Chronic Disease Prevention and Health Promotion Behavioral Risk Factor Surveillance System BRFSS Home | Contact Us |
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2001 Air Quality System Overview document
Please read this document before performing any data analyses.
Provides information on the Air Quality System (AQS), Air Quality Index (AQI), data limitations, variables for analyses, and statistical and analytical issues.
829K 2001 Metropolitan Area Prevalence Tables
225K 2001 Metropolitan Area Data Weighting Methodology
Provides information on the background, design, data collection and processing, and statistical and analytical issues.
324K Annual Summary of Particulate Matter (PM2.5) AQI Values for Selected Metropolitan Areas, 2001
342K Annual Summary of Particulate Matter (PM10) AQI Values for Selected Metropolitan Areas, 2001
184K Annual Summary of Sulfur Dioxide (SO2) AQI Values for Selected Metropolitan Areas, 2001
256K Annual Summary of Carbon Monoxide (CO) AQI Values for Selected Metropolitan Areas, 2001
173K Annual Summary of Ozone (O3) AQI Values for Selected Metropolitan Areas, 2001
316K Annual Summary of Daily AQI Values for Selected Metropolitan Areas, 2001
379K
The data files are provided in ASCII and SAS Transport formats. There are 87,801 records for 2001.
2001 Air Quality System Summary Data
41K Variable Layout for 2001 Air Quality System Summary
37K 2001 Metropolitan Area Data (ASCII)
Data released August 27, 2004This file is in ASCII format. It has a fixed record length of 871 positions.
7.5Mb
Variable Layout for 2001 Metropolitan Area Data
Format information on variable name by column position for Metropolitan Area Data.
15K 2001 Metropolitan Area Data (SAS Transport Format)
Data released August 27, 2004This file was exported from SAS V8.2 in the XPT transport format. This file contains 290 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 PMSA_SASOUT01.SAS program.
14Mb
PMSA_sasout01
SAS for Windows program to convert the ASCII file into a SAS dataset.
24K
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