Accepted for Publication: March 19, 2014.
Published Online: June 9, 2014. doi:10.1001/jamainternmed.2014.2170.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by the National Institute for Health Care Reform (NIHCR).
Role of the Sponsor: The NIHCR provided input on the sample and questionnaire design and also facilitated access to names and contact information of autoworkers for the purposes of sample selection. The NIHCR also provided input on the research questions and objectives for this article but had no role in the analysis and interpretation of data. The NIHCR had no role in the preparation of the manuscript other than to provide comments on an earlier draft.
Additional Contributions: The following individuals reviewed an earlier version of this draft and provided comments. None of these individuals received any compensation for reviewing the manuscript: Ann O’Malley, MD, MPH, Mathematica Policy Research, Washington, DC; Paul Ginsburg, PhD, formerly President of the Center for Studying Health System Change; and Alwyn Cassil, formerly Director of Public Affairs at the Center for Studying Health System Change. In addition, Cynthia Saiontz-Martinez of Social Scientific Systems Inc, Silver Spring, Maryland, was paid to provide the programming for statistical analysis.