Published Online: December 15, 2014. doi:10.1001/jamainternmed.2014.6580.
Study concept and design: All authors.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Steptoe.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Steptoe.
Obtained funding: Steptoe.
Study supervision: Steptoe.
Conflict of Interest Disclosures: None reported.
Funding/Support: The English Longitudinal Study of Ageing was developed by a team of researchers based at the University College London, National Centre for Social Research, and the Institute for Fiscal Studies. The data were collected by the National Centre for Social Research. The funding is provided by the National Institute on Aging in the United States and a consortium of UK government departments coordinated by the Office for National Statistics. The developers and funders of the English Longitudinal Study of Ageing and the UK Data Archive do not bear any responsibility for the analyses or interpretations presented here. Ms Rippon is supported by University College London and the International Longevity Centre UK, and Dr Steptoe holds the British Heart Foundation chair of psychology.
Role of the Funder/Sponsor: The funders 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.