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We would like to thank you for the opportunity to respond to the comment from Dr. K Friedrich Kuhn on our manuscript [1]. Initially, we clarify the outline of our systematic review. We included randomized controlled trials which compared early mobilization defined as started within 1 week of intensive care unit admission and earlier than usual care or control, with the control defined as usual care or mobilization initiated later than the intervention (not “later than 1 week” as described in the comment). The description in the comment was incorrect. As the primary outcomes, we focused on the mortality and health-related quality of life (HRQOL).

Basically, we agree that the timing of early mobilization is one of the most significant components to be discussed, and it is a problem that there is no uniform definition of “early mobilization.” Although we did not perform subgroup analysis to identify the heterogeneity based on the timing, it may be reasonable that the different effect would exist between the groups with different timing.

However, as our study indicated [2], we believe that there is no apparent evidence to support that early mobilization can improve mortality or HRQOL. In the comments, they introduced some studies with different timing of early mobilization, and these studies indicated the effects on some outcomes; however, these studies did not show the impact neither on mortality nor on HRQOL. Only one [3] suggests the improvement of the HRQOL; but it was assessed as high risk of bias in some domains in our systematic review [2]. Therefore, we believe that it is unclear whether the early mobilization can improve mortality or HRQOL regardless of the difference of the definition based on the current available evidence.

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References

  1. 1.

    Kuhn KF, Schaller SJ. Comment on early versus delayed mobilization for in-hospital mortality and health-related quality of life among critically ill patients: a systematic review and meta-analysis. J Intensive Care. 2020. https://doi.org/10.1186/s40560-020-0436-7.

  2. 2.

    Okada Y, Unoki T, Matsuishi Y, Egawa Y, Hayashida K, Inoue S. Early versus delayed mobilization for in-hospital mortality and health-related quality of life among critically ill patients: a systematic review and meta-analysis. J Intensive Care. 2019;7(1):1–9.

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    Morris PE, Berry MJ, Files DC, Thompson JC, Hauser J, Flores L, et al. Standardized rehabilitation and hospital length of stay among patients with acute respiratory failure: a randomized clinical trial. JAMA. 2016;315(24):2694–702.

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YO prepared the draft of the letter. All authors revised the draft critically and approved the contents of the letter.

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Correspondence to Yohei Okada.

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Okada, Y., Unoki, T., Matsuishi, Y. et al. Reply to the comment. j intensive care 8, 22 (2020). https://doi.org/10.1186/s40560-020-00438-3

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