Correction to: BMC Pulm Med (2020) 20:317 https://doi.org/10.1186/s12890-020-01361-x
Following publication of the original article [1], it was brought to the authors’ attention that sentences in the method section were not appropriate, due to an omission in the update of a prior version.
Namely, the following sentences have been deleted in the corrected version:
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“Specifically, the interim assessment of the SOC group will be based on the numbers of patients and of deaths shown in Table 2. The recommendation will be made to stop accruing patients in the SOC group if the number of deaths observed in this group suggests a true mortality rate in excess of 0.4. The rule for DSMB recommendation shown in Table 2 will not be binding.”
Table 2 has been removed, and table 3 has been re-named as “Table 2” in the corrected body text. The error has since been corrected in the original article.
Similarly, in the electronic supplement,
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the following sentences have been deleted:
“Specifically, the interim assessment of the SOC group will be based on the numbers of patients and of deaths shown in Table 1. The recommendation will be made to stop accruing patients in the SOC group if the number of deaths observed in this group suggests a true mortality rate in excess of 0.4. The rule for DSMB recommendation shown in Table 1 will not be binding.”
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Table 1 has been removed, and Table 2 has been re-named as “Table 1” in the corrected body text.
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the word “three” has been replaced by “two” in the following sentence, (paragraph 9.10):
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“Because of the considerable uncertainties about the outcomes that will be observed in the two arms of the trial, the DSMB will be allowed to recommend design changes based on the observed data at the times of the interim analyses.”
The authors apologize for any inconvenience caused.
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