CRP and abscess: Regression analysis indicated that the presence of abscess (OR = 3.60; 95%CI = 1.36–9.48; p = 0.01) and presence of RUQ FF on initial imaging (OR = 2.68, 95%CI = 1.05–6.79; p = 0.038) and CRP > 12 (OR = 2.84; 95%CI = 1.10–7.32; p = 0.031) were independently associated with a longer LOS.