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Flow diagram for MRC National Survey of Health and Development data used in this study*.
Grey boxes = additional adjustments in model 2, Dark grey = additional adjustments in model 3. *Late-life incidence categories (a) Never case-level (b) Case-level in earlier-life only (age ≤ 53) (c) Case-level incidence in later-life (age ≥ 60) and in earlier-life (age ≤ 53) (d) first incidence of case-level in late-life (age ≥ 60).
