The Role of Thoracic Medial Branch Blocks in Managing Chronic Mid and Upper Back Pain: A Randomized, Double-Blind, Active-Control Trial with a 2-Year Followup
Table 1
Baseline demographic characteristics.
Group I ()
Group II ()
P value
Sex
Male
38% (19)
36% (18)
0.836
Female
62% (31)
64% (32)
Age
Mean ± SD
0.431
Height (inches)
Mean ± SD
0.042
Weight (lbs.)
Mean ± SD
BMI
Duration of pain (months)
Mean ± SD
0.994
Mode of onset of Pain
Nontraumatic
68% (34)
72% (36)
0.663
Traumatic
32% (16)
28% (14)
History of previous thoracic surgery
2% (1)
6% (3)
0.617
Group I = bupivacaine only. Group II = bupivacaine and steroid.