The File Output Option must be exercised on a study-by-study basis or with an age range of no more than 6 years.

Files are downloaded in a non-standard, compressed file format (.gz) but may be decompressed using WinZip or PKZIP software. Note that some files may be very large and may require more time to download. If you experience any problems decompressing these files, please contact us using the Contact Us form.

Please read CHAD's Disclaimer page for links to external Web sites.

QUERY BY PERSONAL INFORMATION
CHADID		PID
Age	to	Ethnicity	White Black Asian Hispanic Other Missing
Gender	Female Male Missing
QUERY BY EDUCATION AND EMPLOYMENT INFORMATION
Education	None Some Elementary Elementary School Some High School High School Graduate Some College College Graduate Some Graduate School Graduate or Professional Degree Missing	Is Student?	Yes No Missing
Work Full Time?	Yes No Missing	Is Employed?	Yes No Missing
Household Income	Less than 10K 10K to less than 20K 20K to less than 30K 30K to less than 40K 40K to less than 50K 50K to less than 70K Greater than or equal to 70K Missing	Hours Worked in a Week	0 to 9 hours 10 to 19 hours 20 to 29 hours 30 to 39 hours 40 to 49 hours 50 to 79 hours 80 or more hours Missing
Occupation	Administrative support Executive, Administrative, and Managerial Farming, Forestry, and fishing Handling, equipment cleaners, helpers, and laborers Precision production, craft, and repair Private household Professional Protective service Machine operators, assemblers, and inspectors Sales Service Technicians Transportation and material moving Missing
QUERY BY HOME AND LOCATION INFORMATION
Type of Housing	A one-family house detached from any other house A one-family house attached to one or more houses An apartment building A mobile home or trailer Other Missing
Type of Heating	Steam or hot water system Furnaces and nonportable room heaters Other built-in electric units(permanently installed in wall) Room heaters without flue or vent, burning gas, oil, kerosin No heating equipment Other Missing
Type of Fuel	Coal or Coke Electric and Solar Fuel oil or kerosene Gas Wood No fuel used Other Missing	Have Garage?	Yes No Missing
Use Gas Stove?	Yes No Missing	Have Air Conditioning?	Yes No Missing
State		Zip	to
County
QUERY BY METEOROLOGICAL INFORMATION
Average Daily Temperature [F]	to	Maximum Daily Temperature [F]	to
Rain in Inches	to	Rain in Hours	to
QUERY BY HEALTH INFORMATION
Do you Smoke?	Yes No Missing	Been Around Smokers?	Yes No Missing
Been Around Pesticides?	Yes No Missing	Have Heart/Lung Condition?	Yes No Missing
Have Asthma?	Yes No Missing
QUERY BY QUESTIONNAIRE INFORMATION
Study	BALTIMORE CALIFORNIA-88-ADULT CALIFORNIA-88-YOUTH CALIFORNIA-90-CHILDREN CINCINNATI DENVER LA-ELEMENTARY LA-HIGH SCHOOL MICHIGAN NHAPS-A NHAPS-B VALDEZ WASHINGTON D.C.	Weekday / Weekend	Weekday Weekend Missing

Output Option Screen File With Questionnaire Data Diary Only Data Diary/METS Data Comprehensive Data

The File Output Option must be exercised on a study-by-study basis or with an age range of no more than 6 years.

Files are downloaded in a non-standard, compressed file format (.gz) but may be decompressed using WinZip or PKZIP software. Note that some files may be very large and may require more time to download. If you experience any problems decompressing these files, please contact us using the Contact Us form.