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Table 1 Patient characteristics and case-related data of 12,179 PACU patients

From: The length of stay in the post-anaesthesia care unit correlates with pain intensity, nausea and vomiting on arrival

   Numbers,n(%) Length of stay, hours
     All patients Regular PACU IMC
Gender Women 5,866 (48) 6.1 ± 5.9 3.4 ± 2.1 14.7 ± 6.2*
Men 6,313 (52) 5.4 ± 5.8** 2.9 ± 1.8** 15.6 ± 5.7*,**
Age <40 years 1,312 (11) 4.4 ± 4.8 2.9 ± 1.8 14.4 ± 6.7*
40–80 years 8,009 (66) 5.7 ± 6.0** 3.1 ± 2.0** 15.8 ± 5.7*,**
>80 years 2,858 (24) 6.4 ± 6.1** 3.3 ± 2.1** 14.0 ± 6.4*
ASA classification ASA I 1,949 (16) 3.7 ± 3.9 2.8 ± 1.6 14.3 ± 6.5*
ASA II 5,480 (45) 5.4 ± 5.6** 3.1 ± 2.0** 15.3 ± 5.8*,**
ASA III 4,628 (38) 6.9 ± 6.5** 3.3 ± 2.2** 15.1 ± 6.1*
ASA IV 122 (1) 9.8 ± 8.4** 4.4 ± 3.3** 15.7 ± 8.3*
Surgical specialities General surgery 7,237 (59) 6.4 ± 6.3 3.4 ± 2.1 14.6 ± 6.3*
Cardiac surgery 667 (5) 6.8 ± 6.9 2.8 ± 1.6** 17.3 ± 4.1*,**
Orthopaedic surgery 675 (6) 7.1 ± 5.4** 4.8 ± 1.9** 16.1 ± 4.9*,**
Spine surgery 603 (6) 6.4 ± 5.8 3.5 ± 2.1 15.1 ± 4.3*
Urology 1,584 (13) 5.0 ± 4.6** 2.7 ± 1.6** 16.9 ± 4.9*,**
Ophthalmology 1,267 (10) 2.3 ± 1.9** 2.1 ± 0.9** 14.2 ± 4.5*,**
ENT surgery 146 (1) 3.8 ± 4.2** 2.6 ± 1.5** 16.7 ± 3.5*
Anaesthetic techniques MAC 436 (3) 4.7 ± 5.7 2.7 ± 1.5** 16.9 ± 5.9*,**
Peripheral RA 76 (1) 5.8 ± 6.9 4.0 ± 2.1 12.2 ± 5.7*,**
Central neuraxial RA 1,048 (9) 4.1 ± 4.3** 3.0 ± 1.8 15.6 ± 5.7*
General anaesthesia 8,979 (74) 5.3 ± 5.7 3.0 ± 1.9 15.1 ± 6.0*
Combined anaesthesia 1,640 (13) 8.8 ± 6.8** 4.3 ± 2.3** 15.0 ± 5.9*
Duration of anaesthesia <60 min 196 (4) 5.0 ± 6.1 2.6 ± 1.5 16.2 ± 6.7*
60–180 min 7,888 (63) 4.0 ± 4.1** 2.9 ± 1.7 14.1 ± 6.6*
>180 min 4,095 (33) 8.8 ± 7.1** 3.9 ± 2.4** 15.5 ± 5.7*
Intensity of nursing care Regular PACU/IMC 9,603/2,576 (78/22) 5.7 ± 5.9 3.2 ± 2.3 15.1 ± 6.0*
  1. ASA classification American Society of Anesthesiologists’ classification, ENT ear-nose-throat, IMC intermediate care (more complex, intermediate care patients, NEMS >15), MAC monitored anaesthesia care, PACU post-anaesthesia care unit (regular post-anaesthesia care unit patients, NEMS ≤15), RA regional anaesthesia.
  2. *p <0.05 (comparison PACU-IMC), **p <0.05 (age: comparison with age <40 years; ASA classification: comparison with ASA I; surgical specialities: comparison with general surgery; anaesthetic technique: comparison with general anaesthesia; duration of anaesthesia: comparison with duration <60 min).