Table 4: Outcomes by treatment group.

MED
()
MED/IRD 
() 
()
IRD 
() 
()
SURG 
() 
()

Length of stay (days) (mean ± SD)4.59 (2.4)4.85 (3.02)
0.6
9.47 (7.43)
0.002
6.77 (4.13)
0.006
Duration of inpatient antibiotics (days) (mean ± SD)4.47 (7.19)3.54 (2.75)
0.53
7.77 (6.21)
0.14
5.71 (4.09)
0.51
Duration of outpatient antibiotics (days) (mean ± SD)13.7 (3.84)13.3 (4.03)
0.79
12.2 (2.8)
0.24
11.2 (3.3)
0.04

MED is reference group for comparisons.
< 0.05 denotes statistical significance.
MED: intravenous antibiotic treatment only.
MED/IRD: initial interventional radiology drainage with concurrent intravenous antibiotics.
IRD: failed intravenous antibiotic treatment requiring subsequent interventional radiology drainage.
SURG: initial surgical intervention.