Letter to the Editor: Time-based evidence supporting early percutaneous catheter drainage in pyogenic liver abscess

Table 3 Factors associated with prolonged hospital stay (> 14 days)

Variable	Univariable analysis		Multivariable analysis
	P value	OR (95%CI)	P value	OR (95%CI)
Age	0.178	1.01 (0.99-1.03)
Male sex	0.340	0.78 (0.47-1.28)
Malignancy	0.013	3.07 (1.36-8.24)	0.096	2.19 (0.93-6.07)
Biliary disease	0.811	1.07 (0.63-1.87)
Diabetes mellitus	0.036	1.81 (1.06-3.23)	0.033	1.88 (1.07-3.42)
Hypertension	0.263	1.33 (0.81-2.19)
Altered mentality at admission	0.410	0.54 (0.13-2.69)
Shock at admission	0.657	1.34 (0.41-5.97)
WBC (mm3)	0.246	1.02 (0.99-1.06)
Hemoglobin (g/dL)	0.055	0.88 (0.77-1.00)
ALT (IU/L)	0.485	1.00 (1.00-1.00)
Total bilirubin (mg/dL)	0.307	1.13 (0.92-1.49)
Albumin (g/dL)	< 0.001	0.38 (0.23-0.61)	0.003	0.44 (0.25-0.74)
Creatinine (mg/dL)	0.229	1.23 (0.93-1.86)
hs-CRP (mg/L)	0.268	1.00 (1.00-1.00)
Number of abscess	0.870	1.05 (0.62-1.80)
Maximal abscess diameter (cm)	0.015	1.13 (1.03-1.25)	0.079	1.10 (0.99-1.24)
Early PCD (within 3 days of admission)	0.003	0.38 (0.19-0.70)	0.001	0.33 (0.16-0.63)

Bold rows indicate factors that remained statistically significant in multivariable analysis. WBC: White blood cells; ALT: Alanine aminotransferase; PCD: Percutaneous catheter drainage; hs-CRP: High-sensitivity C-reactive protein; OR: Odds ratio; CI: Confidence interval.