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Table 2 Mean continuous pressures observed in each compartment, split according to highest average compartment pressure

From: The effect of body position on compartmental intra-abdominal pressure following liver transplantation

Subject group Mean compartmental IAP (mmHg, SD) Mean difference between compartments (SD) Mean percentage difference between compartments a
  UIAP LIAP   
Higher 10.5 8.3 2.2 23.4%
UIAP (4.6) (4.5) (2.4)  
Higher 8.6 10.9 2.3 23.6%
LIAP (3.8) (5.6) (3.2)  
Overall 9.7 9.5 0.3 3.1%
  (4.2) (4.6) (4.1)  
  1. UIAP, upper intra-abdominal pressure; LIAP, lower intra-abdominal pressure; SD, Standard Deviation. aMean percentage difference between compartments = mean difference between compartments/(mean UIAP + mean LIAP/2) × 100.