RT Journal Article SR Electronic T1 Social influences on trajectories of self-rated health: a comparative study of four OECD countries JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 75 OP 75 DO 10.1136/jech.2009.096727w VO 63 IS Suppl 2 A1 A. Sacker A1 D. Worts A1 P. McDonough YR 2009 UL http://jech.bmj.com/content/63/Suppl_2/75.abstract AB