A strategy to reduce cardiovascular disease by more than 80%

Some data in the “Efficacy” section of the Results did not accurately reflect the data in table 1 in this paper by N J Wald and M R Law (28 June, p 1419-23). In the fifth paragraph of that section, the fourth sentence should cite the relative risks of an IHD (ischaemic heart disease) event for the four interventions as “0.39, 0.54, 0.84, and 0.68 [not 0.66].” Later in that same sentence, 34% should read 32%.