Predicting short-term major postoperative complications in intestinal resection for Crohn’s disease: A machine learning-based study

Table 4 Related factors of postoperative hospital stay

Variable	Linear regression analysis
	Univariate analysis P value	Multivariate analysis P value
Sex	0.798
Age at surgery (yr)	0.444
Duration of disease (yr)	0.449
History of intestinal resection	0.631
BMI (kg/m2)	0.132
Weight loss > 10% in 6 months prior to surgery	0.328
Mean preoperative laboratory values
C reactive protein serum level (mg/L)	0.087
Erythrocyte sedimentation rate (mm/h)	0.602
Platelets (× 109/L)	0.886
Hemoglobin level (g/L)	0.056	0.015a
Serum albumin (g/L)	0.056
Preoperative CDAI staging	0.061
Montreal classification
Age at diagnosis of CD (yr)	0.574
Disease location	0.342
Disease behavior	0.947
Surgical priority	< 0.001a	0.001a
Surgical approach	< 0.001a	< 0.001a
Type of resection	0.039a
Stoma creation	0.504
Operation time (min)	0.001a	< 0.001a
Intraoperative blood loss (mL)	0.004a

^aP < 0.05.

BMI: Body mass index; CDAI: Crohn’s disease activity index; CD: Crohn’s disease.