“…That is, studies have not distinguished among factors that occur early, intermediate, and late in the life course. Increasing evidence of the link between earlier life events and late-life health (e.g., Blackwell, Hayward & Crimmins, 2001;Blane, Higgs, Hyde & Wiggins, 2004;Hayward & Gorman, 2004;Kuh & Ben-Shlomo, 2004;Lawlor, Batty, Morton, Clark, Macintyre, & Leon, 2005;Luo & Waite, 2005) and between occupational risks and late-life disability (e.g., Crimmins & Hayward 2004;Hayward, Grady, Hardy & Sommers,1989;Reville & Schoeni, 2003) suggest that such factors may be particularly ripe for investigation in understanding trends.…”