Factor Analysis Influencing Postoperative Hospital Stay and Medical Costs for Patients with Definite, Suspected, or Unmatched Diagnosis of Acute Cholecystitis according to the Tokyo Guidelines 2013

Table 4

Univariate analyses of the factors influencing PHS in the 171 patients who had definite, suspected, or unmatched AC diagnoses.

Variables	Regression coefficient	value
Age		<0.001
Sex		0.055
BMI		0.025
DM		0.325
PS		<0.001
Gallbladder stone		0.013
CBD stone		0.008
Acute cholangitis		0.033
Acute pancreatitis		0.381
Preoperative biliary drainage		<0.001
Hospital stay before surgery		<0.001
Preoperative fasting period		<0.001
WBC		<0.001
Hb		<0.001
Plt		<0.001
CRP		<0.001
Alb		<0.001
BUN		<0.001
Cr		0.110
T-Bil		<0.001
AST		0.544
ALT		0.523
ALP		0.018
γ-GTP		0.947
AMY		0.973
PT-INR		<0.001
Severity grade based on TG13		<0.001
A for the diagnosis of AC based on TG13		0.143
B for the diagnosis of AC based on TG13		0.004
C for the diagnosis of AC based on TG13		<0.001

PHS: postoperative hospital stay, AC: acute cholecystitis, BMI: body mass index, DM: diabetes mellitus, PS: performance status, CBD: common bile duct, WBC: white blood cell, Hb: hemoglobin, Plt: platelet cell, CRP: C-reactive protein, Alb: albumin, BUN: blood urea nitrogen, Cr: creatinine, T-Bil: total bilirubin, AST: aspartate aminotransferase, ALT: alanine aminotransferase, ALP: alkaline phosphatase, γ-GTP: γ-glutamyl transpeptidase, AMY: serum amylase, and PT-INR: prothrombin time-international normalized ratio. and .