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Childhood IQ, Social Class, Deprivation, and Their Relationships with Mortality and Morbidity Risk in Later Life: Prospective Observational Study Linking the Scottish Mental Survey 1932 and the Midspan Studies

From the Public Health and Health Policy, Division of Community Based Sciences, University of Glasgow (C.L.H., D.J.H.), Glasgow, Scotland; Psychology, School of Philosophy, Psychology and Language Sciences, University of Edinburgh (M.D.T., I.J.D), Edinburgh, Scotland; Department of Social Medicine, University of Bristol (G.D.S.), Bristol; Department of Mental Health, University of Aberdeen, Clinical Research Centre, Royal Cornhill Hospital (L.J.W), Aberdeen, Scotland; Royal Victoria Hospital (J.M.S.), Edinburgh, Scotland; and Scottish Council for Research in Education, University of Glasgow (V.W.), Edinburgh, Scotland.

View larger version (26K): [in a new window]   Fig. 1. Structural equation model of the associations among childhood IQ, sex (1 = male, 2 = female), social class (lower numbers = higher social class), deprivation (higher numbers = more deprivation), and mortality (1 = alive, 2 = dead). Coefficients placed beside arrows may be squared to give the variance shared by adjacent variables. +p.1; * p.05; ** p.01; *** p.001.