Erratum

In the Research Article by Swetha R Palli, Ami R Buikema, Mary DuCharme, Monica Frazer, Shuchita Kaila & Timothy Juday, “Costs, exacerbations and pneumonia after initiating combination tiotropium olodaterol versus triple therapy for chronic obstructive pulmonary disease”, which appeared in the November 2019 issue of the Journal of Comparative Effectiveness Research (8[15], 1299–1316 [2019]), some errors occurred in the reproduction of Figure 4A and 4B.

For both Figure 4A and 4B the legends were reversed. The TIO + OLO legend should have been indicated as ‘blue’, and the TT legend should have been indicated as ‘red’. While the legends were incorrect, the KM curves and the numbers supporting them were shown correctly.

In addition, for Figure 4B, there was an error in the p-value. The p-value was listed as p = 0.813, whereas it should be listed as p = 0.816.

The figure originally appeared as:

The correct figure is:

The editors of the Journal of Comparative Effectiveness Research would like to sincerely apologize for any inconvenience or confusion this may have caused our readers.