Integrated Health Interview Series (IHIS)

The Integrated Health Interview Series (IHIS) provides integrated data and documentation from the U.S. National Health Interview Surveys (NHIS) from 1969 to the present. Over 1000 integrated variables are now available, and linking keys enable users to include other, not yet integrated variables from the NHIS files.

The link address is: http://www.ihis.us/ihis/