Study concept and design: Blecker, Altekruse, Horwitz.
Acquisition, analysis, or interpretation of data: Blecker, Johnson, Horwitz.
Drafting of the manuscript: Blecker, Altekruse.
Critical revision of the manuscript for important intellectual content: Johnson, Horwitz.
Statistical analysis: Johnson, Altekruse.
Obtained funding: Altekruse.
Administrative, technical, or material support: Blecker, Altekruse, Horwitz.
Study supervision: Horwitz.
Conflict of Interest Disclosures: The authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.
Funding/Support: Dr Blecker was supported by grant K08HS23683 from the Agency for Healthcare Research and Quality.
Role of the Funder/Sponsor: The Agency for Healthcare Research and Quality had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Disclaimer: Any views expressed on statistical, methodological, technical, or operational issues are those of the authors and not necessarily those of the US Census Bureau.