To the Editor:

We have read with interest the editorial by Drs. Kharasch and Houle1  regarding an algorithm developed by Carlisle to detect nonrandom sampling in clinical trials.2  Two of our previous articles3,4  published in Anesthesiology were mentioned in Carlisle’s publication, and we were asked by the journal to verify the correctness of reporting in these articles. Upon review, it is apparent that the P values in tables 1 and 2 of our 2014 article3  and in table 2 of our 2013 article4  are systematically incorrect, given the descriptive statistics. We are unable to locate the primary data to recalculate the P values in these tables. We have located the primary data for table 3 of the 2014 article and verified that the descriptive data presented in the article are correct. We believe that the reported descriptive statistics, including tables 1 and 2 in both articles, are correct, and that the reported P values are incorrect as the result of a systematic error. We believe this has been a systematic copy-and-paste error when data were transferred from one set of analysis to the tables. We have recalculated the P values using the descriptive statistics with simplified t tests, and we have found that all new P values are systematically smaller than the reported erroneous P values. Thus, we believe the conclusions of our studies are not affected by the error.

Competing Interests

The authors declare no competing interests.

References

1.
Kharasch
ED
,
Houle
TT
:
Errors and integrity in seeking and reporting apparent research misconduct.
Anesthesiology
2017
;
127
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733
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2.
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Data fabrication and other reasons for non-random sampling in 5087 randomised, controlled trials in anaesthetic and general medical journals.
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Li
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Y
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KX
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Limb remote ischemic preconditioning attenuates lung injury after pulmonary resection under propofol-remifentanil anesthesia: A randomized controlled study.
Anesthesiology
2014
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121
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249
59
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Li
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M
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Wen
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Y
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CY
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Huang
WQ
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Liu
KX
:
Limb remote ischemic preconditioning for intestinal and pulmonary protection during elective open infrarenal abdominal aortic aneurysm repair: A randomized controlled trial.
Anesthesiology
2013
;
118
:
842
52
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