Author Contributions: Ms Haddad had full access
to all of the data in the study and takes responsibility for the integrity
of the data and the accuracy of the data analysis.
Study concept and design: Haddad, Wilson, Ijaz,
Acquisition of data: Wilson, Moore.
Analysis and interpretation of data: Haddad,
Drafting of the manuscript: Haddad, Wilson.
Critical revision of the manuscript for important
intellectual content: Haddad, Wilson, Ijaz, Marks, Moore.
Statistical analysis: Haddad, Wilson, Marks.
Administrative, technical, or material support:
Study supervision: Ijaz.
Financial Disclosures: None reported.
Funding/Support: All financial and material
support for the design and conduct of this study; collection, management,
analysis, and interpretation of the data; and preparation, review, and approval
of the manuscript were provided by the Division of Tuberculosis Elimination
at the Centers for Disease Control and Prevention. All the authors are full-time
employees of the US Department of Health and Human Services. Analysis of data
in the National TB Surveillance System is part of the authors’ usual
Previous Presentation: Presented in part at
the 132nd Annual Meeting of the American Public Health Association, Washington,
DC, November 6-10, 2004.
Acknowledgment: We gratefully acknowledge the
staff from local and state health departments throughout the United States
who have collected and reported data about TB cases for more than 50 years.
We also thank Martha Burt, PhD, for assistance with understanding the National
Survey of Homeless Assistance Providers and Clients; Robert H. Pratt, BSIE,
for support with SAS coding; the National TB Surveillance System Analytic
Steering Committee for guidance with study objectives and design; and Jose
Becerra, MD, MPH, Lauren Lambert, MPH, and Ann Lanner, BA, for review of the