RT Journal A1 Gershon AS, Wang C, Wilton AS, Raut R, To T T1 Trends in population burden of copd: Actual facts or fallacies?—reply JF Archives of Internal Medicine JO Archives of Internal Medicine YR 2010 FD August 9 VO 170 IS 15 SP 1408 OP 1410 DO 10.1001/archinternmed.2010.260 UL http://dx.doi.org/10.1001/archinternmed.2010.260 AB We thank Bischoff, Crockett, and Schermer for their interest in our article, their insightful comments, and the opportunity to respond to them. They have correctly pointed out that the sex-stratified prevalence trends in Figure 1 of our article1 have been mislabeled. The male and female labels in the legend have been switched. The data from Ontario, Canada, which is depicted correctly in Table 1 of our article and in the text, agrees with the prevalence trends they described in the Netherlands—specifically, a consistently higher prevalence of COPD in men but also a trend showing that the prevalence in women is catching up with men.2 We thank them for pointing out this error. We have informed the Archives, and a correction was published in the June 28, 2010, issue.