Submitted for Publication: October 19, 2012; final revision received February 4, 2013; accepted March 19, 2013.
Published Online: October 9, 2013. doi:10.1001/jamapsychiatry.2013.2163.
Study concept and design: Pearson, Evans, Lewis, Stein.
Acquisition of data: Pearson.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Pearson, Evans, Stein.
Critical revision of the manuscript for important intellectual content: Evans, Kounali, Lewis, Heron, Ramchandani, O’Connor, Stein.
Statistical analysis: Pearson, Evans, Kounali, Lewis, Heron, O’Connor.
Obtained funding: Lewis.
Study supervision: Heron, Stein.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by grants 084268/Z/07/Z (G.L.) and 090139 from the Wellcome Trust (A.S.), R01 MH073842 from the National Institutes of Health (T.O.), 74882 from the United Kingdom Medical Research Council, and 076467 from the Wellcome Trust, provided core support for the Avon Longitudinal Study of Parents and Children (ALSPAC) from the University of Bristol; and a Wellcome Trust Strategic Award (R.M.P.).
Role of the Sponsors: The Medical Research Council, Wellcome Trust, and National Institutes of Health had no influence on the design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, or approval of the manuscript.
Additional Contributions: We thank all the families who took part, the midwives for help in recruiting them, and the entire ALSPAC team, which includes interviewers, computer and laboratory technicians, clerical workers, research scientists, volunteers, managers, receptionists, and nurses.