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. 2022 Sep 15;78(1):36–44. doi: 10.1111/anae.15852

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© 2022 The Authors. Anaesthesia published by John Wiley & Sons Ltd on behalf of Association of Anaesthetists.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Location, number and time of occurrence of adverse events in patients transferred directly to the general ward or admitted to PACU after elective knee and hip arthroplasty. Events are grouped in time slots 0–2 h, 2–6 h and 6–24 h after surgery, and the location of occurrence of the event is marked either by grey (occurring in the general ward) or black (occurring in the PACU). Patients are discharged continuously over time from PACU onto the ward when ready to discharge, and so the number of patients in each time slot is not constant. A patient can therefore be represented with an event occurring in both the ward and the PACU within the same time slot.