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Annals of Intensive Care

Table 2 BMI categories and mean IAP values

From: Effects of zero reference position on bladder pressure measurements: an observational study

BMI (kg/m2)

IAPMAL (mmHg)

IAPSP (mmHg)

p value

20-25 (n = 68)

7.4 ± 2.2

5.4 ± 2.1

< 0.0001a

26-30 (n = 8)

7.4 ± 2.3

5.6 ± 2.8

0.012b

> 30 (n = 24)

12.1 ± 0.8

10.0 ± 1.3

< 0.0001b

p valuec

< 0.0001

< 0.0001

 
  1. aTwo-sample paired t test; bWilcoxon signed-rank test; cone-way analysis of variance. BMI, body mass index; IAP, intra-abdominal pressure; MAL, midaxillary line; SP, symphysis pubis.
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