Population based study of social and productive activities as predictors of survival among elderly Americans

In this article by Thomas A Glass et al (21 August, pp 478-83), the currency conversions given for incomes were wrong. In the first paragraph of the section “Variables used in the analyses” the incomes should have been as follows: <$5000 (<£3125), $5000-9999 (£3125-6250); >$10 000 (>£6250).