Chronic Disease and the Environment

2001 Environmental Quality and Metropolitan Area Data and Documentation

Data Information

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

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Data Files

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, 2004 This 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, 2004 This 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

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SAS Resources

PMSA_sasout01 SAS for Windows program to convert the ASCII file into a SAS dataset.	24K

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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. 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 Project Years
2006 | 2005 | 2004 | 2003 | 2002 | 2001

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Page last reviewed: 08/04/2008
Page last updated: 08/04/2008

United States Department of Health and Human Services
Centers for Disease Control and Prevention
National Center for Chronic Disease Prevention and Health Promotion
Division of Adult and Community Health