Are there special conditions for the use of questions or scales appearing in NCHS surveys?
Except where it is noted, material in the NCHS catalog is in the public domain and may be used and reprinted without special permission; citation as to source, however, is appreciated. When permission from the copyright holders to reproduce particular survey questions has been obtained, this is noted in the “Additional information” section of the Measures Summary. In the case of other measures, special conditions for use are also noted in the “Additional information” section of the Measures Summary.
