Accepted for Publication: February 14, 2011.
Published Online: April 11, 2011. doi:10.1001/archdermatol.2011.66
Author Contributions: All authors had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Kyei and Bergfeld. Acquisition of data: Kyei, Bergfeld, Piliang, and Summers. Analysis and interpretation of data: Kyei and Bergfeld. Drafting of the manuscript: Kyei, Bergfeld, and Piliang. Critical revision of the manuscript for important intellectual content: Kyei, Bergfeld, and Summers. Statistical analysis: Kyei. Obtained funding: Bergfeld. Administrative, technical, and material support: Kyei. Study supervision: Kyei.
Financial Disclosure: None reported.
Funding/Support: This study was supported in part by the NAHRS and Proctor & Gamble.
Role of the Sponsors: The sponsors had no role in the design and conduct of the study; in the collection, analysis, and interpretation of data; or in the preparation, review, or approval of the manuscript.
Additional Information: The coinvestigators of this multicenter study are as follows: Dr Bergfeld, Cleveland Clinic; Elise Olsen, MD; Duke University; David Whiting, MD, Baylor Hair Research and Treatment Center; Janet Roberts, MD, Northwest Cutaneous Research Specialists; Faith Durden, MD, Case Western Reserve University; Leonard Sperling, MD, US Uniform Health Services; Valerie Callendar, MD, Howard University College of Medicine; and Amy McMichael, MD, Wake Forest University. A complete list of people from the Cleveland Clinic site who agreed to participate in the study and responded to the questionnaire was recently published in the Journal of the American Academy of Dermatology (2011;64:245-252).
Additional Contributions: Jim Bena, BA, from the Cleveland Clinic Department of Biostatistics and Epidemiology assisted with the statistical analysis portion of this study.