Author Contributions: Dr Luman 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: Luman, Buehler, Pickering.
Analysis and interpretation of data: Luman,
Barker, Shaw, McCauley.
Drafting of the manuscript: Luman, Shaw.
Critical revision of the manuscript for important
intellectual content: Luman, Barker, McCauley, Buehler, Pickering.
Statistical analysis: Luman, Barker, Shaw.
Study supervision: Barker.
Financial Disclosure: None reported.
Funding/Support: This research and the National
Immunization Survey were conducted through funding by the Centers for Disease
Control and Prevention, US Department of Health and Human Services.
Role of the Sponsor: This study, including
design and conduct, data collection, analysis and interpretation of the data,
and manuscript preparation, review, and approval was conducted under the auspices
of the Department of Health and Human Services and the Centers for Disease
Control and Prevention. The Centers for Disease Control and Prevention gave
final approval of the manuscript.
Acknowledgment: We thank Karen Broder, MD,
Mark Papania, MD, and Susan Chu, PhD, for their review and suggestions.