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An error occurred in this article by Suzanne H Richards and
colleagues (13 June, pp 1796-801). In table 6 (p 1800) the difference (95% confidence interval) for "Information on treatment (as much as
wanted)" should have been
3.2 (
15.7 to 9.3) (rather than
3.2
(
11.2 to 17.8)). This does not, however, affect the interpretation of the results.