TY - JOUR A1 - Matthews, R.J. A1 - Smith, L.K. A1 - Hancock, R.M. A1 - Jagger, C. A1 - Spiers, N.A. T1 - Socioeconomic factors associated with the onset of disability in older age: A longitudinal study of people aged 75 years and over Y1 - 2005 DO - 10.1016/j.socscimed.2005.02.007 JF - Social Science and Medicine VL - 61 IS - 7 SP - 1567 EP - -1575 ER -