This is a 11-digit numeric variable.
CCFACT is the chronic condition prevalence factor. It is a technical variable that is used in calculating the weights that should be used when analyzing data from the 1978-1996 conditions records.
For more information on the IPUMS NHIS-constructed pre-1997 condition variables, see the User Note on Condition Records and Condition Variables.
- 1978-1996: All persons.
- 1978-1996 : PERWEIGHT