Key points are not available for this paper at this time.
Marian F. MacDorman, PhD,is a Statistician with the Division of Vital Statistics, National Center for Health Statistics, Center for Disease Control and Prevention, in Hyattsville, Maryland. George A. Gay, MSPH,is Special Assistant for Registration Methods, with the Division of Vital Statistics, National Center for Health Statistics, Centers for Disease Control and Prevention in Hyattsville, Maryland. Use of trade names and commercial sources is for identification only and does not imply endorsement by the Public Health Service or by the U.S. Department of Health and Human Services. The authors wish to thank Mark Fulcomer, Wilbur C. Hadden, Mary Anne Freedman. Pamela Akison, Ken Keppel, and Harry Rosenberg for valuable assistance with this project.
MacDorman et al. (Mon,) studied this question.