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The authors have noticed some minor discrepancies in the above manuscript about which they wish to notify readers. As part of a sensitivity analysis during the review process, the efficacy end-points were re-analysed, adjusting for baseline maintenance respiratory medication use. The re-analysis led to extremely minor difference in numbers, without in any way altering whether the results were nominally statistically significant or the interpretations of the findings. All relevant areas were updated accordingly prior to publication. However, parts of the abstract and of table 3 were not adjusted.

european respiratory journal/the european respiratory journal

"LONG-TERM EFFICACY OF TIOTROPIUM IN RELATION TO SMOKING STATUS IN THE UPLIFT TRIAL". D.P. TASHKIN, B. CELLI, S. KESTEN, T. LYSTIG, S. MEHRA AND M. DECRAMER. EUR RESPIR J 2010; 35: 287-294.