About this article
Published Online: Sep 02, 2014
Page range: 567 - 570
DOI: https://doi.org/10.2478/jos-2014-0036
© by Whitney Kirzinger
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Whitney Kirzinger
Data Analysis and Quality Assurance Branch, Division of Health Interview Statistics, National Center for Health Statistics, 3311 Toledo Road, Room 2329, Hyattsville, Maryland 20782