Bedside gastrointestinal ultrasound combined with acute gastrointestinal injury score to guide enteral nutrition therapy in critically patients

Table 4 Pairwise comparison of IAP, CSA, Diam, Peri and PRE

	AUC difference	Standard error	95% CI	Z	P
IAP-CSA	0.393	0.0297	0.335–0.452	13.252	< 0.001*
IAP-PRE(CSA, Diam, Peri)	0.448	0.289	0.391–0.504	15.523	< 0.001*
IAP-PRE(CSA, Diam)	0.444	0.029	0.387–0.501	15.286	< 0.001*
IAP-PRE(CSA, Peri)	0.423	0.0289	0.366–0.479	14.613	< 0.001*
IAP-PRE(Diam, Peri)	0.411	0.0301	0.352–0.470	13.679	< 0.001*
CSA-PRE(CSA, Diam, Peri)	0.0544	0.0113	0.032–0.076	4.832	< 0.001*
CSA-PRE(CSA, Diam)	0.0505	0.0108	0.0293–0.0718	4.658	< 0.001*
CSA-PRE(CSA, Peri)	0.0293	0.007	0.014–0.044	3.801	0.001*
CSA-PRE(Diam, Peri)	0.0179	0.017	-0.015–0.05	1.058	0.29
PRE(CSA, Diam, Peri)- PRE(CSA, Diam)	0.0038	0.002	-0.0004–0.008	1.742	0.08
PRE(CSA, Diam, Peri)- PRE(CSA, Peri)	0.025	0.006	0.0128–0.037	4.027	0.001*
PRE(CSA, Diam, Peri)- PRE(Diam, Peri)	0.036	0.008	0.018–0.054	4.07	< 0.001*
PRE(CSA, Diam)- PRE(CSA, Peri)	0.02	0.007	0.007–0.035	3.009	0.002*
PRE(CSA, Diam)- PRE(Diam, Peri)	0.03	0.01	0.0125–0.053	3.175	0.001*
PRE(CSA, Peri)- PRE(Diam, Peri)	0.011	0.011	-0.011–0.034	0.982	0.326

IAP Intra-abdominal pressure,mmHg, CSA Transverse area of gastric antrum,cm², Diam Diameter of left descending colonic or right ascending colonic,cm, Peri Peristalsis frequency; PRE the joint evaluation of transverse area of gastric antrum and colonic diameter, colonic peristalsis frequency
ROC curve of IAP, CSA, Diam, Peri and PRE
6a:ROC curve of IAP, CSA, Diam, Peri and the joint evaluation of CSA, Diam, Peri: The sensitivity and specificity of different parameters were compared with the enteral nutrition success group: IAP ≤ 16 mmHg, AUC 0.502; CSA ≤ 9cm2, AUC 0.896; Diam ≤ 2.9 cm, AUC 0.92; Peri > 3 bpm, AUC0.845; CSA + Diam + Peri, AUC 0.95
6b: IAP, CSA, Diam, Peri and PRE, pairwise comparison showed statistical difference

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