Table 2: Admission clinical characteristics by treatment group.

MED
MED/IRD 

()
IRD 

()
SURG 

()

Duration of pain prior to presentation (days) (mean ± SD)5.49 
(4.87)
5.2 
(5.68) 
0.82
4.25 
(2.7) 
0.4
2.6 
(2.16) 
0.03
Presence of cervical motion tenderness (CMT)22 (58%)8 (44%) 
0.26
1 (20%) 
0.13
0 (0%) 
0.01
Admission temperature (F) (mean ± SD)100.6 (1.84)99.7 (2.02) 
0.08
100 (2.03) 
0.3
99.9 (2.13) 
0.2
Mean white blood cell count (WBC), K/L (SD) 13.9 (5.12)15 (3.97) 
0.3
18.7 (5.94)  
0.003
16.5 (5.82) 
0.05
Unilateral abscess30 (71%)19 (76%)  
0.28
12 (80%) 
0.38
20 (80%) 
0.31
Largest dimension of TOA (cm) (SD) 5.18 (2.05)7.42 (3.22) 
0.02
6.78 (2.95) 
0.03
7.85 (3.96) 
0.001

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.